diff --git a/config/packages/messenger.yaml b/config/packages/messenger.yaml
index bc5be9a..13c2132 100644
--- a/config/packages/messenger.yaml
+++ b/config/packages/messenger.yaml
@@ -22,3 +22,11 @@ framework:
 
             # Route your messages to the transports
             # 'App\Message\YourMessage': async
+
+when@dev:
+    framework:
+        messenger:
+            routing:
+                Symfony\Component\Mailer\Messenger\SendEmailMessage: sync
+                Symfony\Component\Notifier\Message\ChatMessage: sync
+                Symfony\Component\Notifier\Message\SmsMessage: sync