Go here:
Green Dimes

Sign up for their free unsubscription service. They will give you a nice list of like 10 things to do, half are going to websites, half are mailing physical mailings. Do them all. This will help stop junk mail.

“But Dan, I can just throw my junk mail away. It doesn’t bother me.”

No. Do it. This will save you time in the long run. O(1) asymptotic runtime. Digging through your junk mail is O(n).

(my secret agenda here: save some trees.)