diff --git a/Habitica/src/main/java/com/habitrpg/android/habitica/ui/activities/MainActivity.java b/Habitica/src/main/java/com/habitrpg/android/habitica/ui/activities/MainActivity.java
index 1dd82dd2b..245b30ad1 100644
--- a/Habitica/src/main/java/com/habitrpg/android/habitica/ui/activities/MainActivity.java
+++ b/Habitica/src/main/java/com/habitrpg/android/habitica/ui/activities/MainActivity.java
@@ -63,9 +63,12 @@ import com.magicmicky.habitrpgwrapper.lib.models.tasks.TaskTag;
 import com.mikepenz.materialdrawer.AccountHeader;
 import com.mikepenz.materialdrawer.Drawer;
 import com.mikepenz.materialdrawer.DrawerBuilder;
+import com.mikepenz.materialdrawer.holder.BadgeStyle;
+import com.mikepenz.materialdrawer.holder.StringHolder;
 import com.mikepenz.materialdrawer.model.PrimaryDrawerItem;
 import com.mikepenz.materialdrawer.model.interfaces.IDrawerItem;
 import com.mikepenz.materialdrawer.model.interfaces.IProfile;
+import com.mikepenz.materialdrawer.model.utils.BadgeDrawableBuilder;
 import com.raizlabs.android.dbflow.runtime.TransactionManager;
 import com.raizlabs.android.dbflow.runtime.transaction.BaseTransaction;
 import com.raizlabs.android.dbflow.runtime.transaction.TransactionListener;
@@ -97,6 +100,7 @@ import android.database.sqlite.SQLiteDoneException;
 import android.databinding.DataBindingUtil;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
+import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Rect;
 import android.graphics.drawable.BitmapDrawable;
@@ -346,6 +350,9 @@ public class MainActivity extends BaseActivity implements Action1<Throwable>, Ha
             displayDeathDialogIfNeeded();
 
             if (!fromLocalDb) {
+
+                displayNewInboxMessagesBadge();
+
                 // Update the oldEntries
                 new Thread(() -> {
 
@@ -441,6 +448,31 @@ public class MainActivity extends BaseActivity implements Action1<Throwable>, Ha
         }
     }
 
+    private void displayNewInboxMessagesBadge() {
+        Integer numberOfUnreadPms = this.user.getInbox().getNewMessages();
+        IDrawerItem newInboxItem;
+
+        if (numberOfUnreadPms <= 0) {
+            newInboxItem = new PrimaryDrawerItem()
+                    .withName(this.getString(R.string.sidebar_inbox))
+                    .withIdentifier(MainDrawerBuilder.SIDEBAR_INBOX);
+        } else {
+            String numberOfUnreadPmsLabel = String.valueOf(numberOfUnreadPms);
+            BadgeStyle badgeStyle = new BadgeStyle()
+                    .withTextColor(Color.WHITE)
+                    .withColorRes(R.color.md_red_700);
+
+            newInboxItem = new PrimaryDrawerItem()
+                    .withName(this.getString(R.string.sidebar_inbox))
+                    .withIdentifier(MainDrawerBuilder.SIDEBAR_INBOX)
+                    .withBadge(numberOfUnreadPmsLabel)
+                    .withBadgeStyle(badgeStyle);
+        }
+
+        this.drawer.updateItemAtPosition(newInboxItem, MainDrawerBuilder.SIDEBAR_INBOX + 2);
+    }
+
+
     private void loadAndRemoveOldChecklists(final List<ChecklistItem> onlineEntries) {
         final ArrayList<String> onlineChecklistItemIdList = new ArrayList<>();
 
diff --git a/Habitica/src/main/java/com/habitrpg/android/habitica/ui/fragments/social/InboxFragment.java b/Habitica/src/main/java/com/habitrpg/android/habitica/ui/fragments/social/InboxFragment.java
index f331e0a8d..c0d037858 100644
--- a/Habitica/src/main/java/com/habitrpg/android/habitica/ui/fragments/social/InboxFragment.java
+++ b/Habitica/src/main/java/com/habitrpg/android/habitica/ui/fragments/social/InboxFragment.java
@@ -43,6 +43,10 @@ public class InboxFragment extends BaseMainFragment
                              Bundle savedInstanceState) {
         super.onCreateView(inflater, container, savedInstanceState);
 
+        this.apiHelper.apiService.markPrivateMessagesRead()
+                .compose(apiHelper.configureApiCallObserver())
+                .subscribe(aVoid -> {}, throwable -> {});
+
         View v = inflater.inflate(R.layout.fragment_inbox, container, false);
         unbinder = ButterKnife.bind(this, v);
 
diff --git a/Habitica/src/main/java/com/magicmicky/habitrpgwrapper/lib/api/ApiService.java b/Habitica/src/main/java/com/magicmicky/habitrpgwrapper/lib/api/ApiService.java
index 3be2f1bb0..672c7c64c 100644
--- a/Habitica/src/main/java/com/magicmicky/habitrpgwrapper/lib/api/ApiService.java
+++ b/Habitica/src/main/java/com/magicmicky/habitrpgwrapper/lib/api/ApiService.java
@@ -144,6 +144,9 @@ public interface ApiService {
     @POST("user/disable-classes")
     Observable<HabitRPGUser> disableClasses();
 
+    @POST("user/mark-pms-read")
+    Observable<Void> markPrivateMessagesRead();
+
     /* Group API */
 
     @GET("groups")