"Train as Spam" produces 20 seconds of beachball before completing

Setup: OS X latest fully updated; Apple Mail

Problem: When I know use “Train as Spam” I get a spinning beachball for 20 seconds before the instruction completes.

Activity monitor shows both Mail and Spamsieve as red during this period.

Does that mean 10.11.6 or 10.12?

Please record samples from both apps during the beachball and send them to me via e-mail. Thanks!

10.11.6

Will do.

Thanks. The delay seems to be caused by Mail being slow to mark the messages as junk. Please see the AppleMailChangeJunkStatus setting.

Thanks Michael. All good now. Problem solved.