I'm using the latest version of TB: 128.4.3esr (32-bit) . . . But, I think I have noticed this on previous versions, also. I like to Disallow Remote content from loading, for security purposes, and then to select to Allow it or not. But I notice that if Remote content is Disallowed, when I click to delete the email, sometimes it works as expected, and sometimes it does not. The problem is, it's like it deletes it, but then another copy of the email appears. It will not delete. I have to hit Escape, and then delete it in the list. Then that does nothing. I have to close and re-open TB to see that the email is gone. This is in contrast to how if I just Allow Remote content, deleting an email always works as expected, but then there is the security risk. If you get a lot of emails you don't want, it's nice to be able to delete them quickly. What is hanging it up, if you Disallow Remote content? I have tried Deleting smart mailboxes and virtualFolders.dat . . . This didn't do anything