I just learned a great workaround for my biggest peeve of K-9 Mail = “Issue 861: Can not copy of move message that is not synchronized with the server”.
If you accidentally delete a message from an IMAP Inbox, and then go to the Trash folder to try to move it back, the app initially does not let you because it doesn’t realize the message is present in the server-side trash. But if you refresh the Trash folder (pull down the top) then the app realizes that the message is indeed movable and all goes well from there on.
Wow, I’ve been suffering this issue for several years and just never saw the solution.
Thank you. My K-9 uses a pop3 to recieve mail so it’s useless to refresh trash.