Most teams validate pods, probes, and rollout status, but skip the email that tells humans a release actually happened. In cloud work, that message is often the first thing an on-call engineer sees, so I treat it as part of the deployment contract too.
Why I treat release emails as part of the deployment contract
For Kubernetes releases, I want one notification path that proves three things:
The pipeline reached the release step.
The service that sends the notification still works.






