Have a filter that moves a mail to a folder in an imap account

Delete that folder on the imap server using other means, so that your filter
doesnt get updated and still believes there is such a folder.

The error message that is shown to the user is unintelligible. It should say
that  the filter called "<filtername>" tryes to move/copy to an unexistant
folder, and should offer button to correct that filter automatically or edit
filter from the popup.




I