If I don't want junk mail that comes to my house, will the post office take it back?
Yes. The best way to return unwanted mail is to write "refused" on it and put it back in the mailbox unopened, Lawrence Postmaster Judy Raney said.
If the mail has been opened, mail carriers can't take it back. First-class mail will be returned to the sender, and all other mail will be destroyed, she said.