deleting? Rated 2 out of 5 stars

Checked the addon - with full of hope in my heart. Seems to be working (not mentioned the crashes...) but the size of the Thunderbird folder files didn't reduce... (moreover, they increased a little... :-/ )
One of the main aims was reducing the mail folder. Unfortunately, this dream of mine didn't get fulfilled... :-(

Compact Folder!

When you delete anything from a mail folder, you can reduce its actual size by using the compact folder command. Just right click the folder in the folder tree and select "Compact Folder". This will remove any deleted message and I think also removed attachments from the mail store