About one week ago I downloaded an app called Paper Karma. You use it to take a picture of the address page on mail you don't want and they unsubscribe you. I LOVE this thing . I had read about it in a magazine article about the top 10 organizational apps. I have gotten confirmation for 8 and have 3 pending for "unsubscribing". I use it now as I look through the mail every day.
I just wanted to pass it on in case any one else might find it helpful.
It works for Android and Mac.