I use Thunderbird as a client email package. Last May I changed email address, and someone fixed it up for me so I keep the emails on the old address, but also have files for sent, deleted etc for the new address. For some reason I have lost all the deleted emails for the new address before 22nd October. I've still got all the sent ones OK.
I can't think I pressed any button to permanently delete them all. Can anyone think what might have happened. I assume there's nothing I can do to get them back?