<a href="http:&#x2F;&#x2F;m.wikihow.com&#x2F;Stop-Junk-Mail-by-Sending-it-Back" rel="nofollow">http:&#x2F;&#x2F;m.wikihow.com&#x2F;Stop-Junk-Mail-by-Sending-it-Back</a><p>Typically, merely putting their letter in the outbox and getting it returned to them is enough to get them to stop, at least after a few times. As a side benefit, it gives money to the USPS, wastes theirs, and saves you have to walk to the trash!