diff --git a/src/Support/NotificationPayloadFactory.php b/src/Support/NotificationPayloadFactory.php
index f3e883a..c64f5a9 100644
--- a/src/Support/NotificationPayloadFactory.php
+++ b/src/Support/NotificationPayloadFactory.php
@@ -19,35 +19,39 @@ class NotificationPayloadFactory
     /**
      * Build the payload for Microsoft Teams Activity Feed.
      *
-     * Informational only (systemDefault).
-     * No clickable navigation from the Activity Feed is expected.
+     * Informational notification that opens the Teams app side pane
+     * and marks the activity item as read.
      *
      * @return array<string, mixed>
      */
     public function make(User $recipient, BlueprintInterface $blueprint): array
     {
-        // Activity Feed is informational only
+        // Activity Feed type (informational, but clickable via /l/entity)
         $activityType = 'systemDefault';
 
-        $forumName = trim((string) $this->settings->get('forum_title', 'Flarum')) ?: 'Flarum';
+        $forumName = trim((string) $this->settings->get('forum_title', 'sbp forum')) ?: 'sbp forum';
 
         // Resolve dynamic data
         $discussionTitle = $this->resolveDiscussionTitle($blueprint) ?? $forumName;
-        $discussionUrl   = $this->resolveSubjectUrl($blueprint)
-            ?? rtrim((string) $this->settings->get('sbp-jm-msteams-webhook.forum_base_url', ''), '/');
-
         $previewSnippet  = $this->buildPreviewText($blueprint);
         $reasonText      = $this->buildReasonTextEn($blueprint);
 
-        // Teams requires /l/ URLs for topic.source = text
-        // /l/browser is the official, neutral deep link for external pages
-        $teamsBrowserLink = 'https://teams.microsoft.com/l/browser/' . rawurlencode($discussionUrl);
+        // Teams App + Personal Tab (THIS is what makes it clickable & read)
+        $teamsAppId    = 'd92b1be6-ea92-46b1-bcb0-c08ffdd1a61a';
+        $teamsEntityId = '8ffe419f-ca44-4627-a4b2-f223da2d07aa';
+
+        // Opens the app side pane and marks the activity as read
+        $teamsTabLink = sprintf(
+            'https://teams.microsoft.com/l/entity/%s/%s',
+            $teamsAppId,
+            $teamsEntityId
+        );
 
         return [
             'topic' => [
                 'source' => 'text',
                 'value'  => $discussionTitle,
-                'webUrl' => $teamsBrowserLink,
+                'webUrl' => $teamsTabLink,
             ],
             'activityType' => $activityType,
             'previewText' => [
@@ -82,6 +86,7 @@ class NotificationPayloadFactory
 
     /**
      * Resolve the URL to the discussion or specific post.
+     * (Not used for navigation in Teams, but kept for completeness.)
      */
     protected function resolveSubjectUrl(BlueprintInterface $blueprint): ?string
     {
@@ -113,7 +118,7 @@ class NotificationPayloadFactory
     }
 
     /**
-     * English reason text for Activity Feed (systemDefault).
+     * English reason text for Activity Feed.
      */
     protected function buildReasonTextEn(BlueprintInterface $blueprint): string
     {
@@ -166,4 +171,4 @@ class NotificationPayloadFactory
 
         return mb_substr($text, 0, 150);
     }
-}
+}
\ No newline at end of file