I recently discovered (and can't be 100% sure when it happened) that I have all inbox emails gone that were dated before late in the day 10-19-20.
All emails are missing in my sent folder before 8-21 and many missing since then.
And emails missing from trash anytime before September as well.
All my folders seem ok and have their items intact.
I've read about this issue in numerous posts on these forums and in many cases the items can be retrieved and I sincerely hope that's the case here as I had items from as far back as 2013, many of which I need.
I did go into trash and went to "retrieve deleted items and found many things that I KNOW I never deleted but that only went back to September as well.