diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/MarkPostAsReadInterface.java b/app/src/main/java/ml/docilealligator/infinityforreddit/MarkPostAsReadInterface.java
new file mode 100644
index 00000000..d14c1c09
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/MarkPostAsReadInterface.java
@@ -0,0 +1,7 @@
+package ml.docilealligator.infinityforreddit;
+
+import ml.docilealligator.infinityforreddit.post.Post;
+
+public interface MarkPostAsReadInterface {
+    void markPostAsRead(Post post);
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/RedditDataRoomDatabase.java b/app/src/main/java/ml/docilealligator/infinityforreddit/RedditDataRoomDatabase.java
index 73138eae..f7cd0e5b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/RedditDataRoomDatabase.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/RedditDataRoomDatabase.java
@@ -16,8 +16,8 @@ import ml.docilealligator.infinityforreddit.customtheme.CustomTheme;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeDao;
 import ml.docilealligator.infinityforreddit.multireddit.MultiReddit;
 import ml.docilealligator.infinityforreddit.multireddit.MultiRedditDao;
-import ml.docilealligator.infinityforreddit.readposts.ReadPost;
-import ml.docilealligator.infinityforreddit.readposts.ReadPostDao;
+import ml.docilealligator.infinityforreddit.readpost.ReadPost;
+import ml.docilealligator.infinityforreddit.readpost.ReadPostDao;
 import ml.docilealligator.infinityforreddit.recentsearchquery.RecentSearchQuery;
 import ml.docilealligator.infinityforreddit.recentsearchquery.RecentSearchQueryDao;
 import ml.docilealligator.infinityforreddit.subreddit.SubredditDao;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/AccountSavedThingActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/AccountSavedThingActivity.java
index 46b474fc..9be885d1 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/AccountSavedThingActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/AccountSavedThingActivity.java
@@ -36,6 +36,11 @@ import javax.inject.Named;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import ml.docilealligator.infinityforreddit.ActivityToolbarInterface;
+import ml.docilealligator.infinityforreddit.FragmentCommunicator;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.MarkPostAsReadInterface;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
 import ml.docilealligator.infinityforreddit.asynctasks.GetCurrentAccountAsyncTask;
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.PostLayoutBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
@@ -43,16 +48,14 @@ import ml.docilealligator.infinityforreddit.events.ChangeNSFWEvent;
 import ml.docilealligator.infinityforreddit.events.SwitchAccountEvent;
 import ml.docilealligator.infinityforreddit.fragments.CommentsListingFragment;
 import ml.docilealligator.infinityforreddit.fragments.PostFragment;
-import ml.docilealligator.infinityforreddit.FragmentCommunicator;
-import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
-import ml.docilealligator.infinityforreddit.R;
-import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.readpost.InsertReadPost;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 import retrofit2.Retrofit;
 
 public class AccountSavedThingActivity extends BaseActivity implements ActivityToolbarInterface,
-        PostLayoutBottomSheetFragment.PostLayoutSelectionCallback {
+        PostLayoutBottomSheetFragment.PostLayoutSelectionCallback, MarkPostAsReadInterface {
 
     private static final String NULL_ACCESS_TOKEN_STATE = "NATS";
     private static final String ACCESS_TOKEN_STATE = "ATS";
@@ -335,6 +338,11 @@ public class AccountSavedThingActivity extends BaseActivity implements ActivityT
         }
     }
 
+    @Override
+    public void markPostAsRead(Post post) {
+        InsertReadPost.insertReadPost(mRedditDataRoomDatabase, mAccountName, post.getId());
+    }
+
     private class SectionsPagerAdapter extends FragmentStateAdapter {
 
         SectionsPagerAdapter(FragmentManager fm, Lifecycle lifecycle) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/FilteredThingActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/FilteredThingActivity.java
index d2bfc20f..279a8346 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/FilteredThingActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/FilteredThingActivity.java
@@ -28,6 +28,13 @@ import javax.inject.Named;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import ml.docilealligator.infinityforreddit.ActivityToolbarInterface;
+import ml.docilealligator.infinityforreddit.FragmentCommunicator;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.MarkPostAsReadInterface;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
 import ml.docilealligator.infinityforreddit.asynctasks.GetCurrentAccountAsyncTask;
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.PostLayoutBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.SearchPostSortTypeBottomSheetFragment;
@@ -37,18 +44,13 @@ import ml.docilealligator.infinityforreddit.bottomsheetfragments.UserThingSortTy
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.events.SwitchAccountEvent;
 import ml.docilealligator.infinityforreddit.fragments.PostFragment;
-import ml.docilealligator.infinityforreddit.FragmentCommunicator;
-import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
-import ml.docilealligator.infinityforreddit.R;
-import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.SortType;
-import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
+import ml.docilealligator.infinityforreddit.readpost.InsertReadPost;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 
 public class FilteredThingActivity extends BaseActivity implements SortTypeSelectionCallback,
-        PostLayoutBottomSheetFragment.PostLayoutSelectionCallback, ActivityToolbarInterface {
+        PostLayoutBottomSheetFragment.PostLayoutSelectionCallback, ActivityToolbarInterface, MarkPostAsReadInterface {
 
     public static final String EXTRA_NAME = "ESN";
     public static final String EXTRA_QUERY = "EQ";
@@ -457,4 +459,9 @@ public class FilteredThingActivity extends BaseActivity implements SortTypeSelec
             ((PostFragment) mFragment).goBackToTop();
         }
     }
+
+    @Override
+    public void markPostAsRead(Post post) {
+        InsertReadPost.insertReadPost(mRedditDataRoomDatabase, mAccountName, post.getId());
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
index ed20aaf3..c963cf84 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
@@ -64,8 +64,17 @@ import javax.inject.Named;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
-import ml.docilealligator.infinityforreddit.account.AccountViewModel;
 import ml.docilealligator.infinityforreddit.ActivityToolbarInterface;
+import ml.docilealligator.infinityforreddit.FetchMyInfo;
+import ml.docilealligator.infinityforreddit.FetchSubscribedThing;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.MarkPostAsReadInterface;
+import ml.docilealligator.infinityforreddit.PullNotificationWorker;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
+import ml.docilealligator.infinityforreddit.account.AccountViewModel;
 import ml.docilealligator.infinityforreddit.adapters.NavigationDrawerRecyclerViewAdapter;
 import ml.docilealligator.infinityforreddit.asynctasks.GetCurrentAccountAsyncTask;
 import ml.docilealligator.infinityforreddit.asynctasks.InsertSubscribedThingsAsyncTask;
@@ -85,17 +94,11 @@ import ml.docilealligator.infinityforreddit.events.ChangeNSFWEvent;
 import ml.docilealligator.infinityforreddit.events.ChangeRequireAuthToAccountSectionEvent;
 import ml.docilealligator.infinityforreddit.events.RecreateActivityEvent;
 import ml.docilealligator.infinityforreddit.events.SwitchAccountEvent;
-import ml.docilealligator.infinityforreddit.FetchMyInfo;
-import ml.docilealligator.infinityforreddit.FetchSubscribedThing;
 import ml.docilealligator.infinityforreddit.fragments.PostFragment;
-import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.message.ReadMessage;
+import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
-import ml.docilealligator.infinityforreddit.PullNotificationWorker;
-import ml.docilealligator.infinityforreddit.R;
-import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.SortType;
-import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
+import ml.docilealligator.infinityforreddit.readpost.InsertReadPost;
 import ml.docilealligator.infinityforreddit.subreddit.SubredditData;
 import ml.docilealligator.infinityforreddit.subscribedsubreddit.SubscribedSubredditData;
 import ml.docilealligator.infinityforreddit.subscribedsubreddit.SubscribedSubredditViewModel;
@@ -110,7 +113,8 @@ import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_YES;
 
 public class MainActivity extends BaseActivity implements SortTypeSelectionCallback,
         PostTypeBottomSheetFragment.PostTypeSelectionCallback, PostLayoutBottomSheetFragment.PostLayoutSelectionCallback,
-        ActivityToolbarInterface, FABMoreOptionsBottomSheetFragment.FABOptionSelectionCallback, RandomBottomSheetFragment.RandomOptionSelectionCallback {
+        ActivityToolbarInterface, FABMoreOptionsBottomSheetFragment.FABOptionSelectionCallback,
+        RandomBottomSheetFragment.RandomOptionSelectionCallback, MarkPostAsReadInterface {
 
     static final String EXTRA_MESSSAGE_FULLNAME = "ENF";
     static final String EXTRA_NEW_ACCOUNT_NAME = "ENAN";
@@ -1269,6 +1273,11 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
         startActivity(intent);
     }
 
+    @Override
+    public void markPostAsRead(Post post) {
+        InsertReadPost.insertReadPost(mRedditDataRoomDatabase, mAccountName, post.getId());
+    }
+
     private class SectionsPagerAdapter extends FragmentStateAdapter {
         int tabCount;
         boolean showFavoriteSubscribedSubreddits;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewMultiRedditDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewMultiRedditDetailActivity.java
index 2caec58b..b0032263 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewMultiRedditDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewMultiRedditDetailActivity.java
@@ -29,6 +29,13 @@ import javax.inject.Named;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import ml.docilealligator.infinityforreddit.ActivityToolbarInterface;
+import ml.docilealligator.infinityforreddit.FragmentCommunicator;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.MarkPostAsReadInterface;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
 import ml.docilealligator.infinityforreddit.asynctasks.GetCurrentAccountAsyncTask;
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.PostLayoutBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.SortTimeBottomSheetFragment;
@@ -36,21 +43,17 @@ import ml.docilealligator.infinityforreddit.bottomsheetfragments.SortTypeBottomS
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.events.RefreshMultiRedditsEvent;
 import ml.docilealligator.infinityforreddit.fragments.PostFragment;
-import ml.docilealligator.infinityforreddit.FragmentCommunicator;
-import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.multireddit.DeleteMultiReddit;
 import ml.docilealligator.infinityforreddit.multireddit.MultiReddit;
+import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
-import ml.docilealligator.infinityforreddit.R;
-import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.SortType;
-import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
+import ml.docilealligator.infinityforreddit.readpost.InsertReadPost;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 import ml.docilealligator.infinityforreddit.utils.Utils;
 import retrofit2.Retrofit;
 
 public class ViewMultiRedditDetailActivity extends BaseActivity implements SortTypeSelectionCallback,
-        PostLayoutBottomSheetFragment.PostLayoutSelectionCallback, ActivityToolbarInterface {
+        PostLayoutBottomSheetFragment.PostLayoutSelectionCallback, ActivityToolbarInterface, MarkPostAsReadInterface {
 
     public static final String EXTRA_MULTIREDDIT_DATA = "EMD";
     public static final String EXTRA_MULTIREDDIT_PATH = "EMP";
@@ -361,4 +364,9 @@ public class ViewMultiRedditDetailActivity extends BaseActivity implements SortT
             Utils.displaySortTypeInToolbar(sortType, toolbar);
         }
     }
+
+    @Override
+    public void markPostAsRead(Post post) {
+        InsertReadPost.insertReadPost(mRedditDataRoomDatabase, mAccountName, post.getId());
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewSubredditDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewSubredditDetailActivity.java
index c62d4ae2..9363a9d8 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewSubredditDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewSubredditDetailActivity.java
@@ -63,6 +63,13 @@ import butterknife.ButterKnife;
 import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
 import ml.docilealligator.infinityforreddit.ActivityToolbarInterface;
 import ml.docilealligator.infinityforreddit.AppBarStateChangeListener;
+import ml.docilealligator.infinityforreddit.FragmentCommunicator;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.MarkPostAsReadInterface;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
 import ml.docilealligator.infinityforreddit.asynctasks.CheckIsSubscribedToSubredditAsyncTask;
 import ml.docilealligator.infinityforreddit.asynctasks.GetCurrentAccountAsyncTask;
 import ml.docilealligator.infinityforreddit.asynctasks.InsertSubredditDataAsyncTask;
@@ -79,14 +86,10 @@ import ml.docilealligator.infinityforreddit.events.GoBackToMainPageEvent;
 import ml.docilealligator.infinityforreddit.events.SwitchAccountEvent;
 import ml.docilealligator.infinityforreddit.fragments.PostFragment;
 import ml.docilealligator.infinityforreddit.fragments.SidebarFragment;
-import ml.docilealligator.infinityforreddit.FragmentCommunicator;
-import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.message.ReadMessage;
+import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
-import ml.docilealligator.infinityforreddit.R;
-import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.SortType;
-import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
+import ml.docilealligator.infinityforreddit.readpost.InsertReadPost;
 import ml.docilealligator.infinityforreddit.subreddit.FetchSubredditData;
 import ml.docilealligator.infinityforreddit.subreddit.SubredditData;
 import ml.docilealligator.infinityforreddit.subreddit.SubredditSubscription;
@@ -99,7 +102,7 @@ import retrofit2.Retrofit;
 public class ViewSubredditDetailActivity extends BaseActivity implements SortTypeSelectionCallback,
         PostTypeBottomSheetFragment.PostTypeSelectionCallback, PostLayoutBottomSheetFragment.PostLayoutSelectionCallback,
         ActivityToolbarInterface, FABMoreOptionsBottomSheetFragment.FABOptionSelectionCallback,
-        RandomBottomSheetFragment.RandomOptionSelectionCallback {
+        RandomBottomSheetFragment.RandomOptionSelectionCallback, MarkPostAsReadInterface {
 
     public static final String EXTRA_SUBREDDIT_NAME_KEY = "ESN";
     public static final String EXTRA_MESSAGE_FULLNAME = "ENF";
@@ -1196,6 +1199,11 @@ public class ViewSubredditDetailActivity extends BaseActivity implements SortTyp
         startActivity(intent);
     }
 
+    @Override
+    public void markPostAsRead(Post post) {
+        InsertReadPost.insertReadPost(mRedditDataRoomDatabase, mAccountName, post.getId());
+    }
+
     private class SectionsPagerAdapter extends FragmentStateAdapter {
 
         SectionsPagerAdapter(FragmentManager fm, Lifecycle lifecycle) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewUserDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewUserDetailActivity.java
index 6b118b07..298cfc51 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewUserDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewUserDetailActivity.java
@@ -56,6 +56,14 @@ import butterknife.ButterKnife;
 import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
 import ml.docilealligator.infinityforreddit.ActivityToolbarInterface;
 import ml.docilealligator.infinityforreddit.AppBarStateChangeListener;
+import ml.docilealligator.infinityforreddit.DeleteThing;
+import ml.docilealligator.infinityforreddit.FragmentCommunicator;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.MarkPostAsReadInterface;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
 import ml.docilealligator.infinityforreddit.asynctasks.CheckIsFollowingUserAsyncTask;
 import ml.docilealligator.infinityforreddit.asynctasks.GetCurrentAccountAsyncTask;
 import ml.docilealligator.infinityforreddit.asynctasks.SwitchAccountAsyncTask;
@@ -63,19 +71,14 @@ import ml.docilealligator.infinityforreddit.bottomsheetfragments.PostLayoutBotto
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.SortTimeBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.UserThingSortTypeBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
-import ml.docilealligator.infinityforreddit.DeleteThing;
 import ml.docilealligator.infinityforreddit.events.ChangeNSFWEvent;
 import ml.docilealligator.infinityforreddit.events.SwitchAccountEvent;
 import ml.docilealligator.infinityforreddit.fragments.CommentsListingFragment;
 import ml.docilealligator.infinityforreddit.fragments.PostFragment;
-import ml.docilealligator.infinityforreddit.FragmentCommunicator;
-import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.message.ReadMessage;
+import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
-import ml.docilealligator.infinityforreddit.R;
-import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.SortType;
-import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
+import ml.docilealligator.infinityforreddit.readpost.InsertReadPost;
 import ml.docilealligator.infinityforreddit.subscribeduser.SubscribedUserDao;
 import ml.docilealligator.infinityforreddit.user.BlockUser;
 import ml.docilealligator.infinityforreddit.user.FetchUserData;
@@ -89,7 +92,7 @@ import pl.droidsonroids.gif.GifImageView;
 import retrofit2.Retrofit;
 
 public class ViewUserDetailActivity extends BaseActivity implements SortTypeSelectionCallback,
-        PostLayoutBottomSheetFragment.PostLayoutSelectionCallback, ActivityToolbarInterface {
+        PostLayoutBottomSheetFragment.PostLayoutSelectionCallback, ActivityToolbarInterface, MarkPostAsReadInterface {
 
     public static final String EXTRA_USER_NAME_KEY = "EUNK";
     public static final String EXTRA_MESSAGE_FULLNAME = "ENF";
@@ -835,6 +838,11 @@ public class ViewUserDetailActivity extends BaseActivity implements SortTypeSele
         }
     }
 
+    @Override
+    public void markPostAsRead(Post post) {
+        InsertReadPost.insertReadPost(mRedditDataRoomDatabase, mAccountName, post.getId());
+    }
+
     private static class InsertUserDataAsyncTask extends AsyncTask<Void, Void, Void> {
 
         private UserDao userDao;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
index 285419a2..a77e3ad2 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
@@ -70,6 +70,7 @@ import im.ene.toro.widget.Container;
 import jp.wasabeef.glide.transformations.BlurTransformation;
 import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
 import ml.docilealligator.infinityforreddit.FetchGfycatOrRedgifsVideoLinks;
+import ml.docilealligator.infinityforreddit.MarkPostAsReadInterface;
 import ml.docilealligator.infinityforreddit.NetworkState;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
@@ -141,10 +142,13 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
     private int mColorPrimaryLightTheme;
     private int mColorAccent;
     private int mCardViewBackgroundColor;
+    private int mReadPostCardViewBackgroundColor;
     private int mPrimaryTextColor;
     private int mSecondaryTextColor;
     private int mPostTitleColor;
     private int mPostContentColor;
+    private int mReadPostTitleColor;
+    private int mReadPostContentColor;
     private int mStickiedPostIconTint;
     private int mPostTypeBackgroundColor;
     private int mPostTypeTextColor;
@@ -255,10 +259,13 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
             mColorPrimaryLightTheme = customThemeWrapper.getColorPrimaryLightTheme();
             mColorAccent = customThemeWrapper.getColorAccent();
             mCardViewBackgroundColor = customThemeWrapper.getCardViewBackgroundColor();
+            mReadPostCardViewBackgroundColor = customThemeWrapper.getReadPostCardViewBackgroundColor();
             mPrimaryTextColor = customThemeWrapper.getPrimaryTextColor();
             mSecondaryTextColor = customThemeWrapper.getSecondaryTextColor();
             mPostTitleColor = customThemeWrapper.getPostTitleColor();
             mPostContentColor = customThemeWrapper.getPostContentColor();
+            mReadPostTitleColor = customThemeWrapper.getReadPostTitleColor();
+            mReadPostContentColor = customThemeWrapper.getReadPostContentColor();
             mStickiedPostIconTint = customThemeWrapper.getStickiedPostIconTint();
             mPostTypeBackgroundColor = customThemeWrapper.getPostTypeBackgroundColor();
             mPostTypeTextColor = customThemeWrapper.getPostTypeTextColor();
@@ -386,6 +393,10 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
         if (holder instanceof PostBaseViewHolder) {
             Post post = getItem(position);
             if (post != null) {
+                if (post.isRead()) {
+                    holder.itemView.setBackgroundTintList(ColorStateList.valueOf(mReadPostCardViewBackgroundColor));
+                    ((PostBaseViewHolder) holder).titleTextView.setTextColor(mReadPostTitleColor);
+                }
                 String subredditNamePrefixed = post.getSubredditNamePrefixed();
                 String subredditName = subredditNamePrefixed.substring(2);
                 String authorPrefixed = "u/" + post.getAuthor();
@@ -683,6 +694,9 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                 } else if (holder instanceof PostTextTypeViewHolder) {
                     if (!post.isSpoiler() && post.getSelfTextPlainTrimmed() != null && !post.getSelfTextPlainTrimmed().equals("")) {
                         ((PostTextTypeViewHolder) holder).contentTextView.setVisibility(View.VISIBLE);
+                        if (post.isRead()) {
+                            ((PostTextTypeViewHolder) holder).contentTextView.setTextColor(mReadPostContentColor);
+                        }
                         ((PostTextTypeViewHolder) holder).contentTextView.setText(post.getSelfTextPlainTrimmed());
                     }
                 }
@@ -691,6 +705,10 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
         } else if (holder instanceof PostCompactBaseViewHolder) {
             Post post = getItem(position);
             if (post != null) {
+                if (post.isRead()) {
+                    holder.itemView.setBackgroundColor(mReadPostCardViewBackgroundColor);
+                    ((PostCompactBaseViewHolder) holder).titleTextView.setTextColor(mReadPostTitleColor);
+                }
                 final String subredditNamePrefixed = post.getSubredditNamePrefixed();
                 String subredditName = subredditNamePrefixed.substring(2);
                 String authorPrefixed = "u/" + post.getAuthor();
@@ -1247,6 +1265,8 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
     public void onViewRecycled(@NonNull RecyclerView.ViewHolder holder) {
         super.onViewRecycled(holder);
         if (holder instanceof PostBaseViewHolder) {
+            ((PostBaseViewHolder) holder).itemView.setBackgroundTintList(ColorStateList.valueOf(mCardViewBackgroundColor));
+            ((PostBaseViewHolder) holder).titleTextView.setTextColor(mPostTitleColor);
             if (holder instanceof PostVideoAutoplayViewHolder) {
                 ((PostVideoAutoplayViewHolder) holder).mediaUri = null;
                 if (((PostVideoAutoplayViewHolder) holder).fetchGfycatOrRedgifsVideoLinks != null) {
@@ -1267,6 +1287,7 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                 ((PostWithPreviewTypeViewHolder) holder).linkTextView.setVisibility(View.GONE);
             } else if (holder instanceof PostTextTypeViewHolder) {
                 ((PostTextTypeViewHolder) holder).contentTextView.setText("");
+                ((PostTextTypeViewHolder) holder).contentTextView.setTextColor(mPostContentColor);
                 ((PostTextTypeViewHolder) holder).contentTextView.setVisibility(View.GONE);
             }
 
@@ -1285,6 +1306,8 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
             ((PostBaseViewHolder) holder).scoreTextView.setTextColor(mPostIconAndInfoColor);
             ((PostBaseViewHolder) holder).downvoteButton.setColorFilter(mPostIconAndInfoColor, android.graphics.PorterDuff.Mode.SRC_IN);
         } else if (holder instanceof PostCompactBaseViewHolder) {
+            ((PostCompactBaseViewHolder) holder).itemView.setBackgroundColor(mCardViewBackgroundColor);
+            ((PostCompactBaseViewHolder) holder).titleTextView.setTextColor(mPostTitleColor);
             mGlide.clear(((PostCompactBaseViewHolder) holder).imageView);
             mGlide.clear(((PostCompactBaseViewHolder) holder).iconGifImageView);
             ((PostCompactBaseViewHolder) holder).stickiedPostImageView.setVisibility(View.GONE);
@@ -1499,12 +1522,16 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
             cardView.setOnClickListener(view -> {
                 int position = getAdapterPosition();
                 if (position >= 0 && canStartActivity) {
-                    canStartActivity = false;
+                    Post post = getItem(position);
+                    if (post != null) {
+                        markPostRead(post);
+                        canStartActivity = false;
 
-                    Intent intent = new Intent(mActivity, ViewPostDetailActivity.class);
-                    intent.putExtra(ViewPostDetailActivity.EXTRA_POST_DATA, getItem(position));
-                    intent.putExtra(ViewPostDetailActivity.EXTRA_POST_LIST_POSITION, getAdapterPosition());
-                    mActivity.startActivity(intent);
+                        Intent intent = new Intent(mActivity, ViewPostDetailActivity.class);
+                        intent.putExtra(ViewPostDetailActivity.EXTRA_POST_DATA, post);
+                        intent.putExtra(ViewPostDetailActivity.EXTRA_POST_LIST_POSITION, getAdapterPosition());
+                        mActivity.startActivity(intent);
+                    }
                 }
             });
 
@@ -1827,6 +1854,18 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                 }
             });
         }
+
+        void markPostRead(Post post) {
+            post.markAsRead();
+            cardView.setBackgroundTintList(ColorStateList.valueOf(mReadPostCardViewBackgroundColor));
+            titleTextView.setTextColor(mReadPostTitleColor);
+            if (this instanceof PostTextTypeViewHolder) {
+                ((PostTextTypeViewHolder) this).contentTextView.setTextColor(mReadPostContentColor);
+            }
+            if (mActivity != null && mActivity instanceof MarkPostAsReadInterface) {
+                ((MarkPostAsReadInterface) mActivity).markPostAsRead(post);
+            }
+        }
     }
 
     class PostVideoAutoplayViewHolder extends PostBaseViewHolder implements ToroPlayer {
@@ -2471,6 +2510,7 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                 }
                 Post post = getItem(position);
                 if (post != null && canStartActivity) {
+                    markPostRead(post);
                     canStartActivity = false;
 
                     Intent intent = new Intent(mActivity, ViewPostDetailActivity.class);
@@ -2839,6 +2879,15 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                 }
             });
         }
+
+        void markPostRead(Post post) {
+            post.markAsRead();
+            itemView.setBackgroundColor(mReadPostCardViewBackgroundColor);
+            titleTextView.setTextColor(mReadPostTitleColor);
+            if (mActivity != null && mActivity instanceof MarkPostAsReadInterface) {
+                ((MarkPostAsReadInterface) mActivity).markPostAsRead(post);
+            }
+        }
     }
 
     class PostCompactLeftThumbnailViewHolder extends PostCompactBaseViewHolder {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
index de0d2c0f..6686e3ff 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
@@ -104,8 +104,8 @@ import ml.docilealligator.infinityforreddit.events.ShowThumbnailOnTheRightInComp
 import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
 import ml.docilealligator.infinityforreddit.post.PostViewModel;
-import ml.docilealligator.infinityforreddit.readposts.FetchReadPosts;
-import ml.docilealligator.infinityforreddit.readposts.ReadPost;
+import ml.docilealligator.infinityforreddit.readpost.FetchReadPosts;
+import ml.docilealligator.infinityforreddit.readpost.ReadPost;
 import ml.docilealligator.infinityforreddit.subredditfilter.FetchSubredditFilters;
 import ml.docilealligator.infinityforreddit.subredditfilter.SubredditFilter;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
@@ -665,14 +665,14 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                             if (activity != null && !activity.isFinishing() && !activity.isDestroyed()) {
                                 this.readPosts = readPosts;
                                 this.subredditFilterList = subredditFilters;
-                                initializeAndPostViewModel(accessToken, locale, filter, nsfw);
+                                initializeAndBindPostViewModel(accessToken, locale, filter, nsfw);
                             }
                         });
             } else {
-                initializeAndPostViewModel(accessToken, locale, filter, nsfw);
+                initializeAndBindPostViewModel(accessToken, locale, filter, nsfw);
             }
         } else {
-            initializeAndPostViewModelForAnonymous(accessToken, locale, filter, nsfw);
+            initializeAndBindPostViewModelForAnonymous(accessToken, locale, filter, nsfw);
         }
 
         vibrateWhenActionTriggered = mSharedPreferences.getBoolean(SharedPreferencesUtils.VIBRATE_WHEN_ACTION_TRIGGERED, true);
@@ -784,57 +784,57 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         return rootView;
     }
 
-    private void initializeAndPostViewModel(String accessToken, Locale locale, int filter, boolean nsfw) {
+    private void initializeAndBindPostViewModel(String accessToken, Locale locale, int filter, boolean nsfw) {
         if (postType == PostDataSource.TYPE_SEARCH) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                     accountName, locale, mSharedPreferences,
-                    postFeedScrolledPositionSharedPreferences, subredditName, query, postType, sortType, filter, nsfw)).get(PostViewModel.class);
+                    postFeedScrolledPositionSharedPreferences, subredditName, query, postType, sortType, filter, nsfw, readPosts)).get(PostViewModel.class);
         } else if (postType == PostDataSource.TYPE_SUBREDDIT) {
             if (subredditName.equals("all") || subredditName.equals("popular")) {
                 mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                         accountName, locale, mSharedPreferences,
-                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, subredditFilterList)).get(PostViewModel.class);
+                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, readPosts, subredditFilterList)).get(PostViewModel.class);
             } else {
                 mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                         accountName, locale, mSharedPreferences,
-                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw)).get(PostViewModel.class);
+                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, readPosts)).get(PostViewModel.class);
             }
         } else if (postType == PostDataSource.TYPE_MULTI_REDDIT) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                     accountName, locale, mSharedPreferences,
-                    postFeedScrolledPositionSharedPreferences, multiRedditPath, postType, sortType, filter, nsfw)).get(PostViewModel.class);
+                    postFeedScrolledPositionSharedPreferences, multiRedditPath, postType, sortType, filter, nsfw, readPosts)).get(PostViewModel.class);
         } else if (postType == PostDataSource.TYPE_USER) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                     accountName, locale, mSharedPreferences,
-                    postFeedScrolledPositionSharedPreferences, username, postType, sortType, where, filter, nsfw)).get(PostViewModel.class);
+                    postFeedScrolledPositionSharedPreferences, username, postType, sortType, where, filter, nsfw, readPosts)).get(PostViewModel.class);
         } else {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mOauthRetrofit, accessToken,
                     accountName, locale, mSharedPreferences, postFeedScrolledPositionSharedPreferences,
-                    postType, sortType, filter, nsfw)).get(PostViewModel.class);
+                    postType, sortType, filter, nsfw, readPosts)).get(PostViewModel.class);
         }
 
         bindPostViewModel();
     }
 
-    private void initializeAndPostViewModelForAnonymous(String accessToken, Locale locale, int filter, boolean nsfw) {
+    private void initializeAndBindPostViewModelForAnonymous(String accessToken, Locale locale, int filter, boolean nsfw) {
         //For anonymous user
         if (postType == PostDataSource.TYPE_SEARCH) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                     accountName, locale, mSharedPreferences,
-                    postFeedScrolledPositionSharedPreferences, subredditName, query, postType, sortType, filter, nsfw)).get(PostViewModel.class);
+                    postFeedScrolledPositionSharedPreferences, subredditName, query, postType, sortType, filter, nsfw, readPosts)).get(PostViewModel.class);
         } else if (postType == PostDataSource.TYPE_SUBREDDIT) {
             if (subredditName.equals("all") || subredditName.equals("popular")) {
                 if (subredditFilterList != null) {
                     mPostViewModel = new ViewModelProvider(this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                             accountName, locale, mSharedPreferences,
-                            postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, subredditFilterList)).get(PostViewModel.class);
+                            postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, readPosts, subredditFilterList)).get(PostViewModel.class);
                 } else {
                     FetchSubredditFilters.fetchSubredditFilters(mRedditDataRoomDatabase, subredditFilters -> {
                         if (activity != null && !activity.isFinishing() && !activity.isDestroyed()) {
                             subredditFilterList = subredditFilters;
                             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                                     accountName, locale, mSharedPreferences,
-                                    postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, subredditFilterList)).get(PostViewModel.class);
+                                    postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, readPosts, subredditFilterList)).get(PostViewModel.class);
 
                             bindPostViewModel();
                         }
@@ -843,20 +843,20 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             } else {
                 mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                         accountName, locale, mSharedPreferences,
-                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw)).get(PostViewModel.class);
+                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, readPosts)).get(PostViewModel.class);
             }
         } else if (postType == PostDataSource.TYPE_MULTI_REDDIT) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                     accountName, locale, mSharedPreferences,
-                    postFeedScrolledPositionSharedPreferences, multiRedditPath, postType, sortType, filter, nsfw)).get(PostViewModel.class);
+                    postFeedScrolledPositionSharedPreferences, multiRedditPath, postType, sortType, filter, nsfw, readPosts)).get(PostViewModel.class);
         } else if (postType == PostDataSource.TYPE_USER) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
                     accountName, locale, mSharedPreferences,
-                    postFeedScrolledPositionSharedPreferences, username, postType, sortType, where, filter, nsfw)).get(PostViewModel.class);
+                    postFeedScrolledPositionSharedPreferences, username, postType, sortType, where, filter, nsfw, readPosts)).get(PostViewModel.class);
         } else {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mOauthRetrofit, accessToken,
                     accountName, locale, mSharedPreferences, postFeedScrolledPositionSharedPreferences,
-                    postType, sortType, filter, nsfw)).get(PostViewModel.class);
+                    postType, sortType, filter, nsfw, readPosts)).get(PostViewModel.class);
         }
 
         if (mPostViewModel != null) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/post/ParsePost.java b/app/src/main/java/ml/docilealligator/infinityforreddit/post/ParsePost.java
index 708f4e75..abf046af 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/post/ParsePost.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/post/ParsePost.java
@@ -9,10 +9,12 @@ import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.LinkedHashSet;
 import java.util.List;
 
 import ml.docilealligator.infinityforreddit.fragments.PostFragment;
+import ml.docilealligator.infinityforreddit.readpost.ReadPost;
 import ml.docilealligator.infinityforreddit.subredditfilter.SubredditFilter;
 import ml.docilealligator.infinityforreddit.utils.JSONUtils;
 import ml.docilealligator.infinityforreddit.utils.Utils;
@@ -22,14 +24,14 @@ import ml.docilealligator.infinityforreddit.utils.Utils;
  */
 
 public class ParsePost {
-    public static void parsePosts(String response, int nPosts, int filter, boolean nsfw,
+    public static void parsePosts(String response, int nPosts, int filter, boolean nsfw, List<ReadPost> readPostList,
                                   ParsePostsListingListener parsePostsListingListener) {
-        new ParsePostDataAsyncTask(response, nPosts, filter, nsfw, parsePostsListingListener).execute();
+        new ParsePostDataAsyncTask(response, nPosts, filter, nsfw, readPostList, parsePostsListingListener).execute();
     }
 
-    public static void parsePosts(String response, int nPosts, int filter, boolean nsfw,
+    public static void parsePosts(String response, int nPosts, int filter, boolean nsfw, List<ReadPost> readPostList,
                                   List<SubredditFilter> subredditFilterList, ParsePostsListingListener parsePostsListingListener) {
-        new ParsePostDataAsyncTask(response, nPosts, filter, nsfw, subredditFilterList, parsePostsListingListener).execute();
+        new ParsePostDataAsyncTask(response, nPosts, filter, nsfw, readPostList, subredditFilterList, parsePostsListingListener).execute();
     }
 
     public static void parsePost(String response, ParsePostListener parsePostListener) {
@@ -490,6 +492,7 @@ public class ParsePost {
         private int nPosts;
         private int filter;
         private boolean nsfw;
+        private List<ReadPost> readPostList;
         private List<SubredditFilter> subredditFilterList;
         private ParsePostsListingListener parsePostsListingListener;
         private ParsePostListener parsePostListener;
@@ -498,7 +501,7 @@ public class ParsePost {
         private String lastItem;
         private boolean parseFailed;
 
-        ParsePostDataAsyncTask(String response, int nPosts, int filter, boolean nsfw,
+        ParsePostDataAsyncTask(String response, int nPosts, int filter, boolean nsfw, List<ReadPost> readPostList,
                                ParsePostsListingListener parsePostsListingListener) {
             this.parsePostsListingListener = parsePostsListingListener;
             try {
@@ -508,6 +511,7 @@ public class ParsePost {
                 this.nPosts = nPosts;
                 this.filter = filter;
                 this.nsfw = nsfw;
+                this.readPostList = readPostList;
                 newPosts = new LinkedHashSet<>();
                 parseFailed = false;
             } catch (JSONException e) {
@@ -516,9 +520,9 @@ public class ParsePost {
             }
         }
 
-        ParsePostDataAsyncTask(String response, int nPosts, int filter, boolean nsfw,
+        ParsePostDataAsyncTask(String response, int nPosts, int filter, boolean nsfw, List<ReadPost> readPostList,
                                List<SubredditFilter> subredditFilterList, ParsePostsListingListener parsePostsListingListener) {
-            this(response, nPosts, filter, nsfw, parsePostsListingListener);
+            this(response, nPosts, filter, nsfw, readPostList, parsePostsListingListener);
             this.subredditFilterList = subredditFilterList;
         }
 
@@ -564,12 +568,16 @@ public class ParsePost {
                     size = nPosts;
                 }
 
+                HashSet<ReadPost> readPostHashSet = new HashSet<>(readPostList);
                 for (int i = 0; i < size; i++) {
                     try {
                         if (allData.getJSONObject(i).getString(JSONUtils.KIND_KEY).equals("t3")) {
                             JSONObject data = allData.getJSONObject(i).getJSONObject(JSONUtils.DATA_KEY);
                             Post post = parseBasicData(data);
                             boolean availablePost = true;
+                            if (readPostHashSet.contains(ReadPost.convertPost(post))) {
+                                post.markAsRead();
+                            }
                             if (subredditFilterList != null) {
                                 for (SubredditFilter subredditFilter : subredditFilterList) {
                                     if (subredditFilter.getSubredditName().equals(post.getSubredditName())) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/post/Post.java b/app/src/main/java/ml/docilealligator/infinityforreddit/post/Post.java
index 1e220487..582c398d 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/post/Post.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/post/Post.java
@@ -71,6 +71,7 @@ public class Post implements Parcelable {
     private boolean locked;
     private boolean saved;
     private boolean isCrosspost;
+    private boolean isRead;
     private String crosspostParentId;
     private ArrayList<Preview> previews = new ArrayList<>();
     private ArrayList<Gallery> gallery = new ArrayList<>();
@@ -107,6 +108,7 @@ public class Post implements Parcelable {
         this.locked = locked;
         this.saved = saved;
         this.isCrosspost = isCrosspost;
+        isRead = false;
     }
 
     public Post(String id, String fullName, String subredditName, String subredditNamePrefixed,
@@ -142,6 +144,7 @@ public class Post implements Parcelable {
         this.locked = locked;
         this.saved = saved;
         this.isCrosspost = isCrosspost;
+        isRead = false;
     }
 
     protected Post(Parcel in) {
@@ -183,6 +186,7 @@ public class Post implements Parcelable {
         locked = in.readByte() != 0;
         saved = in.readByte() != 0;
         isCrosspost = in.readByte() != 0;
+        isRead = in.readByte() != 0;
         crosspostParentId = in.readString();
         in.readTypedList(previews, Preview.CREATOR);
         in.readTypedList(gallery, Gallery.CREATOR);
@@ -446,6 +450,14 @@ public class Post implements Parcelable {
         return isCrosspost;
     }
 
+    public void markAsRead() {
+        isRead = true;
+    }
+
+    public boolean isRead() {
+        return isRead;
+    }
+
     public String getCrosspostParentId() {
         return crosspostParentId;
     }
@@ -510,6 +522,7 @@ public class Post implements Parcelable {
         parcel.writeByte((byte) (locked ? 1 : 0));
         parcel.writeByte((byte) (saved ? 1 : 0));
         parcel.writeByte((byte) (isCrosspost ? 1 : 0));
+        parcel.writeByte((byte) (isRead ? 1 : 0));
         parcel.writeString(crosspostParentId);
         parcel.writeTypedList(previews);
         parcel.writeTypedList(gallery);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostDataSource.java b/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostDataSource.java
index 20e43fce..e17a9a1c 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostDataSource.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostDataSource.java
@@ -11,9 +11,10 @@ import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Locale;
 
-import ml.docilealligator.infinityforreddit.apis.RedditAPI;
 import ml.docilealligator.infinityforreddit.NetworkState;
 import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.apis.RedditAPI;
+import ml.docilealligator.infinityforreddit.readpost.ReadPost;
 import ml.docilealligator.infinityforreddit.subredditfilter.SubredditFilter;
 import ml.docilealligator.infinityforreddit.utils.APIUtils;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
@@ -48,6 +49,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
     private SortType sortType;
     private boolean nsfw;
     private int filter;
+    private List<ReadPost> readPostList;
     private List<SubredditFilter> subredditFilterList;
     private String userWhere;
     private String multiRedditPath;
@@ -62,7 +64,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
 
     PostDataSource(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                    SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences, int postType,
-                   SortType sortType, int filter, boolean nsfw) {
+                   SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.accountName = accountName;
@@ -76,12 +78,14 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
         this.sortType = sortType == null ? new SortType(SortType.Type.BEST) : sortType;
         this.filter = filter;
         this.nsfw = nsfw;
+        this.readPostList = readPostList;
         postLinkedHashSet = new LinkedHashSet<>();
     }
 
     PostDataSource(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                    SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
-                   String path, int postType, SortType sortType, int filter, boolean nsfw, List<SubredditFilter> subredditFilterList) {
+                   String path, int postType, SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList,
+                   List<SubredditFilter> subredditFilterList) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.accountName = accountName;
@@ -116,13 +120,14 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
         }
         this.filter = filter;
         this.nsfw = nsfw;
+        this.readPostList = readPostList;
         this.subredditFilterList = subredditFilterList;
         postLinkedHashSet = new LinkedHashSet<>();
     }
 
     PostDataSource(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                    SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences, String subredditOrUserName,
-                   int postType, SortType sortType, String where, int filter, boolean nsfw) {
+                   int postType, SortType sortType, String where, int filter, boolean nsfw, List<ReadPost> readPostList) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.accountName = accountName;
@@ -138,12 +143,14 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
         userWhere = where;
         this.filter = filter;
         this.nsfw = nsfw;
+        this.readPostList = readPostList;
         postLinkedHashSet = new LinkedHashSet<>();
     }
 
     PostDataSource(Retrofit retrofit, String accessToken, String accountName, Locale locale,
-                   SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences, String subredditOrUserName,
-                   String query, int postType, SortType sortType, int filter, boolean nsfw) {
+                   SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
+                   String subredditOrUserName, String query, int postType, SortType sortType, int filter,
+                   boolean nsfw, List<ReadPost> readPostList) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.accountName = accountName;
@@ -160,6 +167,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
         this.filter = filter;
         this.nsfw = nsfw;
         postLinkedHashSet = new LinkedHashSet<>();
+        this.readPostList = readPostList;
     }
 
     MutableLiveData<NetworkState> getPaginationNetworkStateLiveData() {
@@ -250,7 +258,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -313,7 +321,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -373,7 +381,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, subredditFilterList,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList, subredditFilterList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -447,7 +455,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, subredditFilterList,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList, subredditFilterList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -508,7 +516,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -579,7 +587,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -662,7 +670,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -753,7 +761,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -813,7 +821,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
@@ -884,7 +892,7 @@ public class PostDataSource extends PageKeyedDataSource<String, Post> {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull retrofit2.Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePosts(response.body(), -1, filter, nsfw,
+                    ParsePost.parsePosts(response.body(), -1, filter, nsfw, readPostList,
                             new ParsePost.ParsePostsListingListener() {
                                 @Override
                                 public void onParsePostsListingSuccess(LinkedHashSet<Post> newPosts, String lastItem) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostDataSourceFactory.java b/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostDataSourceFactory.java
index 5973e009..6d49e4d3 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostDataSourceFactory.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostDataSourceFactory.java
@@ -10,6 +10,7 @@ import java.util.List;
 import java.util.Locale;
 
 import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.readpost.ReadPost;
 import ml.docilealligator.infinityforreddit.subredditfilter.SubredditFilter;
 import retrofit2.Retrofit;
 
@@ -27,14 +28,16 @@ class PostDataSourceFactory extends DataSource.Factory {
     private String userWhere;
     private int filter;
     private boolean nsfw;
+    private List<ReadPost> readPostList;
     private List<SubredditFilter> subredditFilterList;
 
     private PostDataSource postDataSource;
     private MutableLiveData<PostDataSource> postDataSourceLiveData;
 
     PostDataSourceFactory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
-                          SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
-                          int postType, SortType sortType, int filter, boolean nsfw) {
+                          SharedPreferences sharedPreferences,
+                          SharedPreferences postFeedScrolledPositionSharedPreferences, int postType,
+                          SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.accountName = accountName;
@@ -46,12 +49,13 @@ class PostDataSourceFactory extends DataSource.Factory {
         this.sortType = sortType;
         this.filter = filter;
         this.nsfw = nsfw;
+        this.readPostList = readPostList;
     }
 
     PostDataSourceFactory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                           SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                           String subredditName, int postType, SortType sortType, int filter, boolean nsfw,
-                          List<SubredditFilter> subredditFilterList) {
+                          List<ReadPost> readPostList, List<SubredditFilter> subredditFilterList) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.accountName = accountName;
@@ -64,13 +68,14 @@ class PostDataSourceFactory extends DataSource.Factory {
         this.sortType = sortType;
         this.filter = filter;
         this.nsfw = nsfw;
+        this.readPostList = readPostList;
         this.subredditFilterList = subredditFilterList;
     }
 
     PostDataSourceFactory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                           SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                           String subredditName, int postType, SortType sortType, String where, int filter,
-                          boolean nsfw) {
+                          boolean nsfw, List<ReadPost> readPostList) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.accountName = accountName;
@@ -84,12 +89,13 @@ class PostDataSourceFactory extends DataSource.Factory {
         userWhere = where;
         this.filter = filter;
         this.nsfw = nsfw;
+        this.readPostList = readPostList;
     }
 
     PostDataSourceFactory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                           SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                           String subredditName, String query, int postType, SortType sortType, int filter,
-                          boolean nsfw) {
+                          boolean nsfw, List<ReadPost> readPostList) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.accountName = accountName;
@@ -103,6 +109,7 @@ class PostDataSourceFactory extends DataSource.Factory {
         this.sortType = sortType;
         this.filter = filter;
         this.nsfw = nsfw;
+        this.readPostList = readPostList;
     }
 
     @NonNull
@@ -110,16 +117,20 @@ class PostDataSourceFactory extends DataSource.Factory {
     public DataSource<String, Post> create() {
         if (postType == PostDataSource.TYPE_FRONT_PAGE) {
             postDataSource = new PostDataSource(retrofit, accessToken, accountName, locale,
-                    sharedPreferences, postFeedScrolledPositionSharedPreferences, postType, sortType, filter, nsfw);
+                    sharedPreferences, postFeedScrolledPositionSharedPreferences, postType, sortType, filter,
+                    nsfw, readPostList);
         } else if (postType == PostDataSource.TYPE_SEARCH) {
             postDataSource = new PostDataSource(retrofit, accessToken, accountName, locale,
-                    sharedPreferences, postFeedScrolledPositionSharedPreferences, subredditName, query, postType, sortType, filter, nsfw);
+                    sharedPreferences, postFeedScrolledPositionSharedPreferences, subredditName, query,
+                    postType, sortType, filter, nsfw, readPostList);
         } else if (postType == PostDataSource.TYPE_SUBREDDIT || postType == PostDataSource.TYPE_MULTI_REDDIT) {
             postDataSource = new PostDataSource(retrofit, accessToken, accountName, locale,
-                    sharedPreferences, postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, subredditFilterList);
+                    sharedPreferences, postFeedScrolledPositionSharedPreferences, subredditName, postType,
+                    sortType, filter, nsfw, readPostList, subredditFilterList);
         } else {
             postDataSource = new PostDataSource(retrofit, accessToken, accountName, locale,
-                    sharedPreferences, postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, userWhere, filter, nsfw);
+                    sharedPreferences, postFeedScrolledPositionSharedPreferences, subredditName, postType,
+                    sortType, userWhere, filter, nsfw, readPostList);
         }
 
         postDataSourceLiveData.postValue(postDataSource);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostViewModel.java b/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostViewModel.java
index 114c68ee..c9193429 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostViewModel.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostViewModel.java
@@ -18,6 +18,7 @@ import java.util.Locale;
 
 import ml.docilealligator.infinityforreddit.NetworkState;
 import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.readpost.ReadPost;
 import ml.docilealligator.infinityforreddit.subredditfilter.SubredditFilter;
 import retrofit2.Retrofit;
 
@@ -33,9 +34,9 @@ public class PostViewModel extends ViewModel {
 
     public PostViewModel(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                          SharedPreferences sharedPreferences, SharedPreferences cache, int postType,
-                         SortType sortType, int filter, boolean nsfw) {
+                         SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList) {
         postDataSourceFactory = new PostDataSourceFactory(retrofit, accessToken, accountName, locale,
-                sharedPreferences, cache, postType, sortType, filter, nsfw);
+                sharedPreferences, cache, postType, sortType, filter, nsfw, readPostList);
 
         initialLoadingState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 PostDataSource::getInitialLoadStateLiveData);
@@ -65,9 +66,11 @@ public class PostViewModel extends ViewModel {
 
     public PostViewModel(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                          SharedPreferences sharedPreferences, SharedPreferences cache, String subredditName,
-                         int postType, SortType sortType, int filter, boolean nsfw, List<SubredditFilter> subredditFilterList) {
+                         int postType, SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList,
+                         List<SubredditFilter> subredditFilterList) {
         postDataSourceFactory = new PostDataSourceFactory(retrofit, accessToken, accountName, locale,
-                sharedPreferences, cache, subredditName, postType, sortType, filter, nsfw, subredditFilterList);
+                sharedPreferences, cache, subredditName, postType, sortType, filter, nsfw, readPostList,
+                subredditFilterList);
 
         initialLoadingState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 PostDataSource::getInitialLoadStateLiveData);
@@ -97,10 +100,10 @@ public class PostViewModel extends ViewModel {
 
     public PostViewModel(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                          SharedPreferences sharedPreferences, SharedPreferences cache, String subredditName,
-                         int postType, SortType sortType, String where, int filter,
-                         boolean nsfw) {
+                         int postType, SortType sortType, String where, int filter, boolean nsfw,
+                         List<ReadPost> readPostList) {
         postDataSourceFactory = new PostDataSourceFactory(retrofit, accessToken, accountName, locale,
-                sharedPreferences, cache, subredditName, postType, sortType, where, filter, nsfw);
+                sharedPreferences, cache, subredditName, postType, sortType, where, filter, nsfw, readPostList);
 
         initialLoadingState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 PostDataSource::getInitialLoadStateLiveData);
@@ -130,10 +133,10 @@ public class PostViewModel extends ViewModel {
 
     public PostViewModel(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                          SharedPreferences sharedPreferences, SharedPreferences cache, String subredditName,
-                         String query, int postType, SortType sortType, int filter,
-                         boolean nsfw) {
+                         String query, int postType, SortType sortType, int filter, boolean nsfw,
+                         List<ReadPost> readPostList) {
         postDataSourceFactory = new PostDataSourceFactory(retrofit, accessToken, accountName, locale,
-                sharedPreferences, cache, subredditName, query, postType, sortType, filter, nsfw);
+                sharedPreferences, cache, subredditName, query, postType, sortType, filter, nsfw, readPostList);
 
         initialLoadingState = Transformations.switchMap(postDataSourceFactory.getPostDataSourceLiveData(),
                 PostDataSource::getInitialLoadStateLiveData);
@@ -207,11 +210,12 @@ public class PostViewModel extends ViewModel {
         private String userWhere;
         private int filter;
         private boolean nsfw;
+        private List<ReadPost> readPostList;
         private List<SubredditFilter> subredditFilterList;
 
         public Factory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
-                       int postType, SortType sortType, int filter, boolean nsfw) {
+                       int postType, SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList) {
             this.retrofit = retrofit;
             this.accessToken = accessToken;
             this.accountName = accountName;
@@ -222,11 +226,12 @@ public class PostViewModel extends ViewModel {
             this.sortType = sortType;
             this.filter = filter;
             this.nsfw = nsfw;
+            this.readPostList = readPostList;
         }
 
         public Factory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences, String subredditName,
-                       int postType, SortType sortType, int filter, boolean nsfw) {
+                       int postType, SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList) {
             this.retrofit = retrofit;
             this.accessToken = accessToken;
             this.accountName = accountName;
@@ -238,12 +243,14 @@ public class PostViewModel extends ViewModel {
             this.sortType = sortType;
             this.filter = filter;
             this.nsfw = nsfw;
+            this.readPostList = readPostList;
         }
 
         //With subreddit filter
         public Factory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences, String subredditName,
-                       int postType, SortType sortType, int filter, boolean nsfw, List<SubredditFilter> subredditFilterList) {
+                       int postType, SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList,
+                       List<SubredditFilter> subredditFilterList) {
             this.retrofit = retrofit;
             this.accessToken = accessToken;
             this.accountName = accountName;
@@ -255,14 +262,14 @@ public class PostViewModel extends ViewModel {
             this.sortType = sortType;
             this.filter = filter;
             this.nsfw = nsfw;
+            this.readPostList = readPostList;
             this.subredditFilterList = subredditFilterList;
         }
 
         //User posts
         public Factory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences, String subredditName,
-                       int postType, SortType sortType, String where, int filter,
-                       boolean nsfw) {
+                       int postType, SortType sortType, String where, int filter, boolean nsfw, List<ReadPost> readPostList) {
             this.retrofit = retrofit;
             this.accessToken = accessToken;
             this.accountName = accountName;
@@ -275,11 +282,12 @@ public class PostViewModel extends ViewModel {
             userWhere = where;
             this.filter = filter;
             this.nsfw = nsfw;
+            this.readPostList = readPostList;
         }
 
         public Factory(Retrofit retrofit, String accessToken, String accountName, Locale locale,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences, String subredditName,
-                       String query, int postType, SortType sortType, int filter, boolean nsfw) {
+                       String query, int postType, SortType sortType, int filter, boolean nsfw, List<ReadPost> readPostList) {
             this.retrofit = retrofit;
             this.accessToken = accessToken;
             this.accountName = accountName;
@@ -292,6 +300,7 @@ public class PostViewModel extends ViewModel {
             this.sortType = sortType;
             this.filter = filter;
             this.nsfw = nsfw;
+            this.readPostList = readPostList;
         }
 
         @NonNull
@@ -299,16 +308,19 @@ public class PostViewModel extends ViewModel {
         public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
             if (postType == PostDataSource.TYPE_FRONT_PAGE) {
                 return (T) new PostViewModel(retrofit, accessToken, accountName, locale, sharedPreferences,
-                        postFeedScrolledPositionSharedPreferences, postType, sortType, filter, nsfw);
+                        postFeedScrolledPositionSharedPreferences, postType, sortType, filter, nsfw, readPostList);
             } else if (postType == PostDataSource.TYPE_SEARCH) {
                 return (T) new PostViewModel(retrofit, accessToken, accountName, locale, sharedPreferences,
-                        postFeedScrolledPositionSharedPreferences, subredditName, query, postType, sortType, filter, nsfw);
+                        postFeedScrolledPositionSharedPreferences, subredditName, query, postType, sortType,
+                        filter, nsfw, readPostList);
             } else if (postType == PostDataSource.TYPE_SUBREDDIT || postType == PostDataSource.TYPE_MULTI_REDDIT) {
                 return (T) new PostViewModel(retrofit, accessToken, accountName, locale, sharedPreferences,
-                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, filter, nsfw, subredditFilterList);
+                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType,
+                        filter, nsfw, readPostList, subredditFilterList);
             } else {
                 return (T) new PostViewModel(retrofit, accessToken, accountName, locale, sharedPreferences,
-                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType, userWhere, filter, nsfw);
+                        postFeedScrolledPositionSharedPreferences, subredditName, postType, sortType,
+                        userWhere, filter, nsfw, readPostList);
             }
         }
     }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/readposts/FetchReadPosts.java b/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/FetchReadPosts.java
similarity index 97%
rename from app/src/main/java/ml/docilealligator/infinityforreddit/readposts/FetchReadPosts.java
rename to app/src/main/java/ml/docilealligator/infinityforreddit/readpost/FetchReadPosts.java
index cfb70789..33ade1f3 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/readposts/FetchReadPosts.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/FetchReadPosts.java
@@ -1,4 +1,4 @@
-package ml.docilealligator.infinityforreddit.readposts;
+package ml.docilealligator.infinityforreddit.readpost;
 
 import android.os.AsyncTask;
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/InsertReadPost.java b/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/InsertReadPost.java
new file mode 100644
index 00000000..b5d34c6f
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/InsertReadPost.java
@@ -0,0 +1,34 @@
+package ml.docilealligator.infinityforreddit.readpost;
+
+import android.os.AsyncTask;
+
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+
+public class InsertReadPost {
+    public static void insertReadPost(RedditDataRoomDatabase redditDataRoomDatabase, String username, String postId) {
+        new InsertReadPostAsyncTask(redditDataRoomDatabase, username, postId).execute();
+    }
+
+    private static class InsertReadPostAsyncTask extends AsyncTask<Void, Void, Void> {
+
+        private RedditDataRoomDatabase redditDataRoomDatabase;
+        private String username;
+        private String postId;
+
+        public InsertReadPostAsyncTask(RedditDataRoomDatabase redditDataRoomDatabase, String username, String postId) {
+            this.redditDataRoomDatabase = redditDataRoomDatabase;
+            this.username = username;
+            this.postId = postId;
+        }
+
+        @Override
+        protected Void doInBackground(Void... voids) {
+            ReadPostDao readPostDao = redditDataRoomDatabase.readPostDao();
+            if (readPostDao.getReadPostsCount() > 500) {
+                readPostDao.deleteOldestReadPosts(username);
+            }
+            readPostDao.insert(new ReadPost(username, postId));
+            return null;
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/readposts/ReadPost.java b/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/ReadPost.java
similarity index 76%
rename from app/src/main/java/ml/docilealligator/infinityforreddit/readposts/ReadPost.java
rename to app/src/main/java/ml/docilealligator/infinityforreddit/readpost/ReadPost.java
index 27a76b85..df704f3d 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/readposts/ReadPost.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/ReadPost.java
@@ -1,14 +1,16 @@
-package ml.docilealligator.infinityforreddit.readposts;
+package ml.docilealligator.infinityforreddit.readpost;
 
 import android.os.Parcel;
 import android.os.Parcelable;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.room.ColumnInfo;
 import androidx.room.Entity;
 import androidx.room.ForeignKey;
 
 import ml.docilealligator.infinityforreddit.account.Account;
+import ml.docilealligator.infinityforreddit.post.Post;
 
 @Entity(tableName = "read_posts", primaryKeys = {"username", "id"},
         foreignKeys = @ForeignKey(entity = Account.class, parentColumns = "username",
@@ -21,6 +23,10 @@ public class ReadPost implements Parcelable {
     @ColumnInfo(name = "id")
     private String id;
 
+    public static ReadPost convertPost(Post post) {
+        return new ReadPost("temp", post.getId());
+    }
+
     public ReadPost(@NonNull String username, @NonNull String id) {
         this.username = username;
         this.id = id;
@@ -71,4 +77,17 @@ public class ReadPost implements Parcelable {
         parcel.writeString(username);
         parcel.writeString(id);
     }
+
+    @Override
+    public boolean equals(@Nullable Object obj) {
+        if (obj instanceof ReadPost) {
+            return ((ReadPost) obj).id.equals(id);
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        return id.hashCode();
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/readposts/ReadPostDao.java b/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/ReadPostDao.java
similarity index 81%
rename from app/src/main/java/ml/docilealligator/infinityforreddit/readposts/ReadPostDao.java
rename to app/src/main/java/ml/docilealligator/infinityforreddit/readpost/ReadPostDao.java
index 1363f14b..d129e109 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/readposts/ReadPostDao.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/readpost/ReadPostDao.java
@@ -1,4 +1,4 @@
-package ml.docilealligator.infinityforreddit.readposts;
+package ml.docilealligator.infinityforreddit.readpost;
 
 import androidx.room.Dao;
 import androidx.room.Insert;
@@ -15,6 +15,9 @@ public interface ReadPostDao {
     @Query("SELECT * FROM read_posts WHERE username = :username")
     List<ReadPost> getAllReadPosts(String username);
 
+    @Query("SELECT COUNT(id) FROM read_posts")
+    int getReadPostsCount();
+
     @Query("DELETE FROM read_posts WHERE rowid IN (SELECT rowid FROM read_posts LIMIT 100) AND username = :username")
     void deleteOldestReadPosts(String username);
 }