Hello, I have been using Thunderbird for a long time and have a lot of saved messages because I use it to document projects and conversations, etc. About 6 years ago, Thunderbird deleted all my emails and I never recovered them. Sometime last year, I realized that in the older emails, the body of the emails and their subject lines were all mixed up, that is, the email was intact but the subject line was from a different email. I tried to re-index (?) the files and this helped, but didn't completely resolve the issue. Now, my problem is that, when I am reviewing my inbox and delete an unwanted message, the inbox goes blank. I have to close Thunderbird and reopen it, and then the inbox reappears. I get hundreds of emails per day and I need to be able to delete them as I go. Any help would be much appreciated. Thank you.