Is it really illegal for someone who's not a postman to use a mailslot

dumb USPS mail question- outgoing mail door slot? mailbox for door slot Mail slots vs Traditional Mailboxes A person putting a piece of mail through a mail slot on a wood door mailbox door slot Locking Security Mailbox Extra Large Wall Mounted Mailbox or Payment Dropbox Item

mailbox slot for door Avoid choosing a new door with a mail slot It's too easy for someone to Use something strong like Gorilla Tape and make sure to put out a mail box