On my Macbook regularly I receive in Apple mail the notification “Messages downloaden, 1 new message” and there is no new message to see. Has this to do with the set up of SpamSieve? If yes, what is the solution?
Are you referring to the bottom-left of Mail’s main window? I don’t think that has anything to do with SpamSieve.
Yes, that is right, the notification appears on the bottom-left.