I use Apple Mail and SpamSieve 2.9.28 on my mac under OS X 10.12.4 and my mail comes to me via gMail.
Some spam winds up in my Junk folder even though when I look in SpamSieve’s corpus, keywords in the subject line of the spam have a 100% probability of being spam. I checked SpamSieve’s setup instructions and my SpamSieve rule is positioned at the top of my rules and it is exactly like it should be. Enable junk mail filtering is also unchecked. When I see emails in my Junk mail that should be spam I “Train as Spam” them and then delete them.
Am I doing something wrong?