I just realized that moving mails between two different imap accounts does not work. You can drag one or more mails and you can drop them over another imap accounts folder. But nothing happens then. If this was a supported feature, ist broken. Ifnot please make kmail show a different mouse pointer over different imap folder so that the user can realise that this is not possible. Reproducible: Always
As it seems now, I was not entirely correct. Akonadi indeed now seems to do something. And after a kmail crash and restart, mails seem to have been partly moved. So the real problem was that there was absolutely no feedback to the user (to me in the UI) that something is actually happening. What I wanted to do was moving all mails from a folder A in IMAP account A to another folder B in IMAP account B. So I marked all mails in folder A and moved them to folder B using dnd. Maybe I tried that two times because there was no feedback. Then I tried to move the whole folder A via dnd from account A to account B. Again no feedback. Now my akonadi database creates a lot of load on my system and kmail shows that the folder seems to have been moved. But its empty. OTOH mails are now appearing in the folder where I moved them to with my first try. So it all seems to work somehow, but giving absolutely no feedback to the user for an action that can take ages if you try to move tons of mail and/or have a slow internet connection seems like a real problem to me. BTW: Keep up the good work! kmail is really evolving and getting more usable!
We fixed dnd crash. Volker worked on akonadi to fix pb when we move folder.
Thanks Montel for the update. But there is still no feedback to the user or progress info