146 votesAnonymous commented
A couple of simple improvements would provide 90% of the benefit:
1. if a from Address is in the SPAM folder, place all further emails from that From into SPAM
2. Modify the More/Block function to block at the DOMAIN level not just the specific email address. eg. When in SPAM folder, select email, right click, select MORE, Select Block show email address and the domain for that address as separate selections.
3. Let us see the REAL From address, And Block that!