Thunderbird sometimes (but not always) stalls saving emails to the Sent Folder. Today I sent a few emails with attachments no problems, but this afternnon, Im emailing the same people with small attached drawings, and the emails are sitting on my desktop with an alert window saying Status: Copying to Sent Folder, and the progress almost complete. I now have 6 emails waiting to go. Apparently some of the emails have been received by the recipients- so why do I still have this message? I Must retain a copy of all emails on my desktop, so that they can be filed into folders. How can I resolve this issue please?