My first support request about this was posted on Mon, Nov 18 (8:53 a.m.). I never got a response--probably my fault for posting a minor correction which may have caused everyone else to think someone knowledgeable had responded. I apologize for starting a new thread, but it’s been almost a week now and I really need help. The situation: I get my email via POP, and something got corrupted as a result of doing a backup of TB on Nov 15 using MozBackup. Following advice by Toad-Hall on 11/7/23 to a similar support request, in Troubleshooting Information, inside Profile folder, then in Mail, then in the folder for my server, I renamed “Inbox” as “OldInbox.” A new Inbox and new Inbox.msf got created in Mail > 'my-server.' The new Inbox is 0 KB and is dated to the Nov 14, the evening before I did the MozBackup. The date on the new Inbox.msf keeps advancing. There’s a OldInbox.msf file too, with date that keeps advancing. The new Inbox.msf file doesn’t work or isn’t getting used or some such. When I open TB, Inbox still shows the same old list of emails (now inaccessible) that used to be there and that are now accessible in the folder OldInbox. I still get the error message when I try to Get Messages. TB is still not downloading emails from the mail server. How do I get a functioning Inbox?

Addendum Monday, Nov 25, 8:56: I *think* some of the problem has to do with a mixup bwtween two different profiles (mine and an old one for my husband). After my post last evening, I deleted his profile, and lost much of *my* stuff. So I then restored TB from the Nov 15 backup, using MozBackup, and am now pretty much back to where I was at the time of the post above.