Thunderbird has a problem with deleting messages. This mailprogram sometimes refuses to let me delete messages.
After my transition from Linux to Windows 7 some years ago I use the open source mailprogram Mozilla Thunderbird. What an amazing program! It simply does all I want.
A while ago I had a problem with the program:
If I have a few hundred emails in my Inbox, after a few minutes of deleting spam it refuses to let me delete any more. I can still read messages, but not delete them. I have compacted folders, and have used every delete method (including dragging messages to Trash), but nothing seems
to work. I have to close down the computer and reboot before Thunderbird will let me resume deleting (a simple restart of Thunderbird doesn’t help).
I found a lot of hints and tips on Socrates’s blog. Written long time ago but still very useful.
A backup of the page, just to be sure: Socrates’s experience_ ThunderBird A few Tips & Tricks (pdf)