Go 1.11 has reached end of support
and will be deprecated 
on January 31, 2026. After deprecation, you won't be able to deploy Go 1.11
applications, even if your organization previously used an organization policy to
re-enable deployments of legacy runtimes. Your existing Go
1.11 applications will continue to run and receive traffic after their deprecation date 
. We
recommend that you migrate to the latest supported version of Go 
.  
  
  
  
 Receiving Bounce Notification
 
  In order to receive email bounce notifications, you need to configure
  your app to enable email notification and you need to create a handler
  to handle those notifications.
 
 Configuring Your App to Receive Bounce
Notifications
 
 There are two parts to the configuration. First, you need to enable
notification. Second, you need to set the mapping between /_ah/bounce 
and your bounce handler, so App Engine knows where to
POST the notification data. To configure your app to receive bounced email
notifications:
 
  - Add the following to your app.yamlfile to enable notification:inbound_services: - 
mail_bounce 
- Also in app.yaml, declare a mapping between/_ah/bounceand the bounce notification handler in your code, for
example: - 
url: /_ah/bounce
  script: _go_app
  login: admin 
Handling Bounce Notifications
 
 In your app, you'll need to supply bounce handler code to receive and
process the notifications.
 
 The bounce notification will be sent to your app as a POST request to /_ah/bounce 
. Information about the bounce will be form-encoded in
the body of the request.
 
  
  
 
  Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License 
, and code samples are licensed under the Apache 2.0 License 
. For details, see the Google Developers Site Policies 
. Java is a registered trademark of Oracle and/or its affiliates.
 
 Last updated 2025-10-24 UTC.
 
 
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