diff --git a/channels/whatsapp_channel.py b/channels/whatsapp_channel.py
index aa582f6..999ed71 100644
--- a/channels/whatsapp_channel.py
+++ b/channels/whatsapp_channel.py
@@ -70,6 +70,7 @@ class WhatsAppChannel(BaseChannel):
             logger.info("WhatsApp disabled (no credentials configured)")
             return
         self._session = aiohttp.ClientSession()
+        await self._ensure_incoming_enabled()
         logger.info("WhatsApp channel started")
 
     async def stop(self) -> None:
@@ -128,6 +129,24 @@ class WhatsAppChannel(BaseChannel):
         }
         await self._inbound_callback(payload)
 
+
+    async def _ensure_incoming_enabled(self) -> None:
+        """Stellt sicher dass incomingWebhook in der Green-API-Instanz aktiviert ist."""
+        url = f"{self._base_url}/setSettings/{self._token}"
+        try:
+            async with self._get_session().post(
+                url,
+                json={"incomingWebhook": "yes", "outgoingWebhook": "yes"},
+                timeout=aiohttp.ClientTimeout(total=10),
+            ) as resp:
+                data = await resp.json()
+                if data.get("saveSettings"):
+                    logger.info("WhatsApp: incomingWebhook aktiviert")
+                else:
+                    logger.warning("WhatsApp: setSettings Antwort: %s", data)
+        except Exception as exc:
+            logger.warning("WhatsApp: incomingWebhook konnte nicht gesetzt werden: %s", exc)
+
     def _get_session(self) -> aiohttp.ClientSession:
         if not self._session or self._session.closed:
             self._session = aiohttp.ClientSession()