PSA ~ Using Personal Mailboxes for Personal Distribution

It was brought to my attention that flyers were distributed in residents' mailboxes without proper postage and mailing procedures. Please see below regarding what can and cannot be placed in and on mailboxes.

From the USPS Website:
Can a flyer/envelope be put it in someone else's mailbox without being mailed? What if a stamp was placed on it? 

No. Per Sect. 508.3.1.3 of the Domestic Mail Manual (DMM):  

"No part of a mail receptacle may be used to deliver any matter not bearing postage, including items or matter placed upon, supported by, attached to, hung from, or inserted into a mail receptacle. Any mailable matter not bearing postage and found as described above is subject to the same postage as would be paid if it were carried by mail."

"Postage" is defined as: Payment for a delivery service that is affixed or imprinted to a mailpiece, usually in the form of a postage stamp, permit imprint, or meter impression.

Notes:

USPS regulations do not govern what can be placed in a mail slot on your door. This means that if a local business wants to put a flyer in the mail slot, they can do so.

For further questions (or to report occurrences) regarding flyers being placed into your mailbox without first going through the postal system, please refer to the local Post Office.

Can I affix a flyer or poster to a United States Postal Service® Collection Box®?

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.

Thank you for your cooperation and attention to this matter.

Greg