Putting flyers in mailboxes is illegal under federal law. 18 U.S.C. § 1725 bars anyone from placing unstamped material in or on a mailbox approved by the U.S. Postal Service, and each flyer can draw a fine of up to $5,000 for an individual or $10,000 for an organization.1Office of the Law Revision Counsel. 18 USC 1725 – Postage Unpaid on Deposited Mail Matter2Office of the Law Revision Counsel. 18 USC 3571 – Sentence of Fine The rule applies to every flyer, whether it’s a pizza coupon, a campaign leaflet, or a note from a neighbor.
What the Law Actually Covers
Section 1725 names “circulars, sale bills, or other like matter,” which sweeps in essentially any printed flyer or advertisement deposited without postage.1Office of the Law Revision Counsel. 18 USC 1725 – Postage Unpaid on Deposited Mail Matter
The scope is broader than most people realize. The USPS Domestic Mail Manual, Section 508.3.1.3, says no part of a mail receptacle may be used to deliver unpaid matter. That covers anything “placed upon, supported by, attached to, hung from, or inserted into” the box.3USPS. Restrictions for Attaching Flyers, Posters, Etc. to a Mailbox Taping a flyer to the door, clipping it under the flag, wedging it between the box and the post, or sticking an advertisement on the supporting post are all prohibited.4FAQ | USPS. Requirements for City Delivery Mail Receptacles
Homeowners buy their own mailboxes, but once a box is approved for USPS delivery, it becomes part of the federal mail system. The Supreme Court has put it this way: “although mailboxes are privately owned, the postal customer implicitly agrees to abide by statutory and regulatory restrictions that apply to the mailbox in exchange for the Service agreeing to deliver and pick up mail in it.”5United States General Accounting Office. U.S. Postal Service – Information About Restrictions on Mailbox Access
Political, Charitable, and Neighborly Flyers Are Not Exempt
The First Amendment does not carve out an exception. In United States Postal Service v. Council of Greenburgh Civic Associations, the Supreme Court held that a USPS-designated letter box “does not at the same time transform itself into a ‘public forum’ of some limited nature to which the First Amendment guarantees access to all comers.”6Cornell Law School – Legal Information Institute. United States Postal Service v. Council of Greenburgh Civic Associations
The rule applies equally to campaign literature, church bulletins, nonprofit newsletters, and commercial coupons. Groups remain free to use the mail by paying postage or to distribute their materials through other channels.6Cornell Law School – Legal Information Institute. United States Postal Service v. Council of Greenburgh Civic Associations
Penalties and How Enforcement Works
Section 1725 is a fine-only offense. The statute says a violator “shall for each such offense be fined under this title,”1Office of the Law Revision Counsel. 18 USC 1725 – Postage Unpaid on Deposited Mail Matter which points to 18 U.S.C. § 3571 and its general ceiling of $5,000 per offense for individuals and $10,000 for organizations.2Office of the Law Revision Counsel. 18 USC 3571 – Sentence of Fine
The phrase “for each such offense” matters. A crew that stuffs 200 mailboxes has not committed one violation; it has committed 200. In practice, enforcement is usually triggered by a homeowner complaint to the Postal Inspection Service, and small-scale first-time violations rarely draw the maximum. A deliberate, large-scale campaign is a different exposure entirely.
One boundary worth flagging: dropping flyers is not the same offense as tampering with mail. If flyer distribution crosses into displacing or damaging actual mail, more serious statutes come into play. Stealing or removing mail from a receptacle carries up to five years in prison under 18 U.S.C. § 1708, and obstructing mail delivery can mean up to six months under 18 U.S.C. § 1701.
Legal Ways to Get Flyers to the Same Houses
The mailbox is closed to you. The rest of the property generally is not.
Door Hangers and Porch Drops
Hanging a flyer on a doorknob or leaving one on a porch is legal in most places, provided you respect “No Soliciting” and “No Trespassing” signs. Local ordinances vary. Some municipalities require distributors to secure materials so they don’t blow into the street, some restrict distribution hours, and some require a permit. Check with your city or county clerk before a large run.
Hand-to-Hand Distribution
Handing flyers to people on sidewalks, in parks, or outside shopping centers is generally protected speech. Some jurisdictions require permits for organized campaigns on public property. Private property such as a mall parking lot follows the owner’s rules, not the First Amendment.
Community Bulletin Boards
Libraries, grocery stores, community centers, and coffee shops often maintain boards for local postings. Ask first, and follow any size or content guidelines.
Every Door Direct Mail
If the goal is a flyer in every mailbox on a route, the Postal Service’s Every Door Direct Mail program does that legally. You select carrier routes and USPS delivers your flat-sized mailpiece to every active address on them.7USPS Business Customer Gateway. Every Door Direct Mail Overview The retail version costs $0.247 per piece in 2026 and requires no mailing list and no postage permit.8United States Postal Service. First-Class Mail and EDDM – Retail Prices For a small business covering a few neighborhoods, that’s often cheaper than paying people to walk door to door.
Separate Newspaper Tubes
Some homes have a newspaper receptacle mounted on the mailbox post. You can use one for flyers only if it is genuinely separate from the mailbox: it must not touch the mailbox, must not use any part of it for support, must not obstruct the flag, and must not extend past the front of the mailbox when closed.4FAQ | USPS. Requirements for City Delivery Mail Receptacles If a tube is bolted to the mailbox or shares a compartment with it, leave it alone.