Caught a rec from a reader on Facebook, and it seems to be a good one. MailWasher—a freeware. It parks itself like a vulture on the phone-wire, so to speak, and picks off what you designate as bad sources. It can even (read the tips they provide) keep you from even seeing them, if it’s a habitual and obnoxious offender. The other spams it will let you see, and you can change their status.

From 50 annoyances a day, one day gave me the joy of tagging them, and the next day—absent from my awareness. Works with Thunderbird and various other mail programs. Pretty easy to set up: it’ll give you a convenient icon of your e-mail provider which you can use to access it, and a trash bin you can take a look at before nuking wholesale. Pretty hard to lose a good e-mail, and the clutter in the mailbox is history: you can now see the ones you need to see and be rid of the junk.