My emails are disappearing from my folders and subfolders. They are nested inside "Archive" but are on the server - the folders and emails were always on my iPhone in the Mail app. Nothing has changed in terms of settings. I went to reorganize my folders today and noticed that the hundreds of emails I had were gone. I went to double check on my phone and I briefly saw the messages before it refreshed and they disappeared.

I haven't had any issues with emails deleting from inbox. How do I get these back - are they stored somewhere locally, or is there a trick to get them back? For the time being I turned on "do not delete emails" in case the Archive was autodeleting (even though it never had before).