Send junk mail back to the Post Office
“After delivery, an addressee may mark a mailpiece ‘Refused’ and return it within a reasonable time, if the piece or any attachment is not opened.” — Domestic Mail Manual (DMM) 508, section 1.1.3
Are you one of the millions of Americans who is sick of junk mail cluttering up your mailbox? Well, while the Post Office doesn’t exactly advertise it very well, nothing forces you to accept the mail that they try to deliver. You can just refuse the mailpiece and let the Post Office worry about getting rid of it!