I have used Thunderbird for some time and had >4000 emails in the inbox. The program has been struggling recently, frequently showing a 'Not responding' message. Today after apparently compacting my emails the inbox is now completely empty so I have lost all my stored emails, though some remain in the Sent emails folder. There is nothing in the Archived emails folder. Fresh emails are received as normal but I would like to retrieve the previously received emails. Are they stored in a file on my hard drive somewhere? If so how can I get them back?
Thanks for the suggestions. I tried deleting the .msf files but this didn't restore the Inbox files. On looking at the Thunderbird profiles folder I can't see any mbox folders that contain more than a few KB of data so it doesn't look as though I can deal with them as corrupted folders. Very puzzling. I considered doing a System Restore but unfortunately the only restore point made available to me was after the emails had disappeared from the Inbox.