… How about a whitelist of
accepted senders? …

… you’d probably have to find some
way to pay for the extra sorting …
I would pay also!!
I hate all the crap that comes to my door.
I am to the point where I’m saving money for stamps which say:
“RETURN TO SENDER”
“Send No More”
“Does Not Live Here >”
“Remove From Your List”
“Advertising Not Accepted At This Address”
and using whichever are appropriate on each piece of junk mail I receive.
(since I hand write this about 3 times a day anyway)
And, what kills me is I still can’t figure out how to contact the people responsible for the weekly coupons to tell them to stop sending them.