I am missing important communications related to a rental dispute with my past landlord. They are nowhere within gmail. I have searched all folders extensively.

In fact, all communications with a particular person, of which there were many, seem to have mysteriously disappeared. This is quite bizarre.

I was under the impression that there was nothing you could do to redact an email after it was sent.

The only thing that I can think of is that my account was compromised and someone specifically deleted all of those emails, or the app for some reason transferred those emails into a folder that was deleted after some time.