Would love to have more access to spam management. Access to a whitelist/blacklist would be fantastic.
I use a bunch of enviro sensors that are configured to send email alerts based on humidity, temp, motion, light, etc. Sometimes I can receive 0 alerts in a day, sometime dozens. Spam Assassin has decided these alerts are spam and it would be nice to whitelist them, rather than easing up on spam detection and letting more crap through.