[hayley]

I do something similar with wildcard forwarding, only instead of filtering those emails, I full out block an alias when I start getting spam there.

Though I must say that I've been surprised at how many (theoretically) legit places have leaked my email address. Like when aweber got hacked, I suddenly started getting spam on a whole bunch of aliases.

If my address gets leaked but I still want to continue getting email from a company, I update my email address with them to include the (then) current month and year (so companyMMYY@) and then I disable the old alias. So far, I haven't gotten any spam at any of these new MMYY aliases so it kinda feeds my suspicion that their mailing list must have been hacked.