Where are notification emails logged if I need an audit of what was sent?

I need to know what emails were sent to whom on my self-managed kubernetes installed gitlab instance.

Check the log files, most likely under /var/log/gitlab/gitlab-rails

Also, check your email server since the log files there should show you also what emails were sent from your gitlab server. If you are using SMTP locally on the gitlab server, then check /var/log/mail.log or /var/log/maillog depending on the Linux distribution.

I am unable to find that log file on any of the pods in my k8s cluster. I thought sidekiq did the emailing since I see the reference to mailing in /var/log/gitlab/production.log. All I see are cryptic email references and nothing in the mail logs.