Rated 4 out of 5 stars

le sven ar Beal. 18, 2009 · buan-nasc

Great program, but as said before, you may lose the attachments of IMAP messages. To prevent this view the message's source code (Ctrl-U) before changing the header. This should force TB to download the complete message.
To avoid any risk, also activate the "Put Original message in Trash folder".