I have the same problem in that the Verizon spam filtering is horrible. Of course because my two email accounts are both @verizon.net addresses, I my mail goes to both Apple Mail and Verizon inboxes. Spamsieve is working very well with my Apple Mail but spam keeps accumulating in my Verizon inboxes. I only go to Verizon to clear its inbox or to get mail if I am traveling. Is there any way to use Spamsieve to block this spam so that it won’t accumulate?