Accessing email server logs

[catplat]

Priority

3 - Not urgent - can be addressed as team bandwidth permits

Where should the changes be made?

Document how to get email logs from a project.

What exactly should be updated?

https://docs.upsun.com/development/email.html
https://fixed.docs.upsun.com/development/email.html

Optional: Additional context

https://linear.app/platformsh/issue/ADV-2210/document-process-for-accessing-email-server-logs-for-customers