Running Sonoma 14.6
All was great since updating to 3.0.5 a while back.
Suddenly SpamSieve is taking forever to find Spam & even longer if I train a mail as Spam. I get the spinning Beachball.
And when is does its scan for Spam & alerts me with a tone, now I see mail that was previously sent to the spam folder, but now stays in the inbox.
Are you aware that SpamSieve 3.0.5 is from last July and that the current version is 3.1.2?
If you get the spinning beachball in Mail, please see this page.