My mailbox is clogged with junk mail. But far less than it used to be. If this waste of resources bothers you (5 direct mailings from verizon cable a week!) try this, a tip I received from the Murray Ave. Elementary School (Larchmont) PTA:
You can stop 75% of unsolicited mail by registering on the Mail Preference Service on the Direct Marketing Association Website for $1. Within 90 days, most unsolicited mail will stop.
You can also try go unlisted here: https://www.catalogchoice.org/ . This definitely works.