diff --git a/native/android/app/src/main/java/app/comm/android/notifications/CommNotificationsHandler.java b/native/android/app/src/main/java/app/comm/android/notifications/CommNotificationsHandler.java
--- a/native/android/app/src/main/java/app/comm/android/notifications/CommNotificationsHandler.java
+++ b/native/android/app/src/main/java/app/comm/android/notifications/CommNotificationsHandler.java
@@ -39,6 +39,7 @@
   private static final String NOTIF_ID_KEY = "id";
   private static final String ENCRYPTED_PAYLOAD_KEY = "encryptedPayload";
   private static final String ENCRYPTION_FAILED_KEY = "encryptionFailed";
+  private static final String COLLAPSE_ID_KEY = "collapseKey";
 
   private static final String CHANNEL_ID = "default";
   private static final long[] VIBRATION_SPEC = {500, 500};
@@ -234,6 +235,13 @@
       return;
     }
     String id = message.getData().get(NOTIF_ID_KEY);
+    String collapseKey = message.getData().get(COLLAPSE_ID_KEY);
+    String notificationID = id;
+
+    if (collapseKey != null) {
+      notificationID = collapseKey;
+    }
+
     String title = message.getData().get(TITLE_KEY);
     String prefix = message.getData().get(PREFIX_KEY);
     String body = message.getData().get(BODY_KEY);
@@ -268,10 +276,13 @@
 
     if (!this.notificationGroupingSupported() || threadID == null) {
       notificationManager.notify(
-          id, id.hashCode(), notificationBuilder.build());
+          notificationID,
+          notificationID.hashCode(),
+          notificationBuilder.build());
       return;
     }
-    this.addToThreadGroupAndDisplay(id, notificationBuilder, threadID);
+    this.addToThreadGroupAndDisplay(
+        notificationID, notificationBuilder, threadID);
   }
 
   private PendingIntent