It's not working for me. A popular and well-known House member who has a PAC sent me 4 email items today, and I unsubcribed to every one of them....this is about the 4th day in a row I've done this - and did it many time over the last few weeks. Politely? Sure. I don't know how to click on the 'unsuscribe' box in an impolite way.
Don’t unsubscribe; mark the email as “spam.”