diff --git a/backend/src/tools/whiteboard/routes.js b/backend/src/tools/whiteboard/routes.js
index 8752cc7..1f11370 100644
--- a/backend/src/tools/whiteboard/routes.js
+++ b/backend/src/tools/whiteboard/routes.js
@@ -105,7 +105,7 @@ router.get('/:id/data', authenticate, (req, res) => {
 
 // ── Canvas speichern ──────────────────────────────────────────────────────────
 // Feste Route vor :id-Routen
-router.post('/:id/save', authenticate, (req, res) => {
+router.post('/:id/save', authenticate, async (req, res) => {
   const me = uid(req);
   const role = access(req.params.id, me);
   if (!role || role === 'view') return res.status(403).json({ error: 'Kein Schreibzugriff' });
@@ -115,6 +115,35 @@ router.post('/:id/save', authenticate, (req, res) => {
   `).run(JSON.stringify(elements || []), JSON.stringify(viewport || {x:0,y:0,zoom:1}), req.params.id);
   db.prepare("UPDATE whiteboards SET updated_at=datetime('now','localtime') WHERE id=?").run(req.params.id);
   res.json({ ok: true });
+
+  // Pushover an alle anderen mit Zugriff (fire & forget)
+  try {
+    const wb      = db.prepare('SELECT * FROM whiteboards WHERE id=?').get(req.params.id);
+    const saver   = db.prepare('SELECT username FROM users WHERE id=?').get(me);
+    const message = `${saver?.username || 'Jemand'} hat das Whiteboard "${wb?.title || ''}" gespeichert.`;
+
+    // Alle User mit Zugriff: Owner + alle Permissions — außer dem Speichernden selbst
+    const notify = [];
+    if (wb && wb.owner_id !== me) notify.push(wb.owner_id);
+    const perms = db.prepare('SELECT user_id FROM whiteboard_permissions WHERE whiteboard_id=?').all(req.params.id);
+    for (const p of perms) { if (p.user_id !== me) notify.push(p.user_id); }
+
+    for (const userId of [...new Set(notify)]) {
+      const poCfg = db.prepare('SELECT user_key, app_token FROM pushover_settings WHERE user_id=?').get(userId);
+      if (!poCfg?.app_token || !poCfg?.user_key) continue;
+      fetch('https://api.pushover.net/1/messages.json', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          token:   poCfg.app_token,
+          user:    poCfg.user_key,
+          title:   '🖊 Whiteboard aktualisiert',
+          message,
+          priority: 0,
+        }),
+      }).catch(() => {});
+    }
+  } catch {}
 });
 
 // ── Berechtigungen: alle User für Share-Modal ─────────────────────────────────