Three times in the past few months (and twice on the same account) my folders have vanished leaving, behind a long list of files in the 'Mail Folders' box. It is some error that occurs when the account is opening. The first time it happened I redid all the folders - made new ones. The second time was on another account and I began redoing them, only to have them disappear again. When this happens the words 'My Mailbox' next to the mailbox icon at the top of the list of Folders/Files disappears. I would be most grateful if someone could tell me how to recover the folders and/or prevent this from happening again. Thank you