Is putting notes in mailboxes illegal?
Jackson Reed
Updated on January 30, 2026
Yes, it is illegal to place a note in someone’s mailbox. A mailbox is for the sole purpose of delivery and retrieval of the US mail. It is for items bearing postage and delivered by USPS employees. It is illegal for anyone else to place anything in or on the box.
Is putting business cards on doors illegal?
Someone can physically walk them to the door but it is illegal to place anything in a mailbox that has not been delivered by the USPS. You also run the risk of offending or annoying the residents by sticking them in the door.
Can I put my neighbors mail in their mailbox?
Can I Put My Neighbor’s Mail in Their Mailbox? It’s perfectly legal and acceptable to put your neighbor’s mail in their mailbox if it’s been misdelivered. Opening your neighbor’s mail or removing mail from their mailbox however is considered a federal crime in which you can be fined and face jail time.
Can I put fliers in mailboxes?
United States Postal Service Collection boxes are the property of the Postal Service. You are not allowed to affix anything to them, including flyers, signs about missing items or animals, and advertisements.
Can you leave business cards on cars?
Yes. According to California Vehicle Code 5201.1, it’s illegal to obstruct the license plate in which an electronic device cannot record your plate. So though it may be visible to the human eye, if it cannot be seen by a camera it is illegal.
Why is it illegal to put flyers in mailboxes?
You can’t place non-postage stamped mailers inside mailboxes or hang them on the outside of a mailbox. Doing so can result in a hefty fine for each infraction. It can even lead to a federal investigation because mailbox tampering is considered a federal crime.
What should I do with mail that is not mine?
If you’re not sure what to do with mail that isn’t yours, it’s probably easier than you think to get rid of it legally. All you need to do is write “RETURN TO SENDER” on the front of the envelope and put it back in your mailbox. Your postal worker will take care of it for you from there.
Can I throw away misdelivered mail?
You shouldn’t throw away misdelivered mail according to the United States Postal Service. In fact, throwing away mail that isn’t yours could get you in trouble with the law, and you may be fined or imprisoned for up to 5 years in accordance with 18 U.S Code 1702 – Obstruction with Correspondence.
Why is it illegal to put things in mailboxes?
When a mailbox is full, Postal Service regulations say the letter carrier cannot place mail in the box. “First, if there is not enough room in a mailbox due to unauthorized items, the Postal Service can’t deliver the customer’s mail. Secondly, the Postal Service wants to ensure the integrity of our customer’s mailbox.