I am currently running the SpamSieve Beta for OS X El Capitan and it seems to do a good job filtering spam. I had set up some rules in Apple Mail to move the blue and gray spam to the trash folder and the other spam messages are colored and moved to the Spam folder.
The issue is that after restarting Apple Mail, my rules are gone and my inbox begins to fill with spam again. I usually leave Apple Mail running, but after an update, or after a power outage, the rules are gone upon restarting Apple Mail.
Any help would be greatly appreciated.