18 USC 1701 makes it a federal offense knowingly and willfully to obstruct or delay the passage of the mail, or a carrier or conveyance carrying it. The statute authorizes up to six months of imprisonment, a fine, or both. It does not make every late letter or accidental obstruction a crime. [1]
What the government must establish
The conduct must fall within the statute and involve the required knowing and willful mental state. The passage of U.S. mail, its carrier, or its conveyance must be implicated. A delivery problem caused by weather, an honest mistake, or a routine operational issue requires different facts from intentional interference.
For example, deliberately blocking a carrier to prevent delivery presents a different question from briefly stopping near a mailbox without knowing a delivery is underway. Intent, duration, warnings, and surrounding conduct can matter.
Do not confuse neighboring mail statutes
Section 1702 addresses taking or obstructing correspondence in specified circumstances, including certain conduct before delivery to the intended recipient. Theft, destruction, opening, and obstruction can involve different statutes and penalties. The six-month maximum in section 1701 does not limit every possible mail-related charge. [2]
A parcel delivered by a private company is not automatically covered by section 1701 merely because people colloquially call every delivery “mail.” Other federal or state laws may still apply. Identify the actual carrier and conduct.
Handling someone else’s mail
If mail arrives for a former resident or another person, use the Postal Service’s appropriate return or misdelivery process. Do not destroy it, conceal it, or use it to pressure the recipient. A landlord-tenant or family dispute does not authorize interfering with postal delivery.
- Preserve envelopes, tracking information, and relevant messages.
- Document the carrier and alleged delay.
- Separate accidental misdelivery from intentional obstruction.
- Use official postal complaint channels when interference is suspected.
Compare section 1702’s elements and when the Post Office may hold mail. A legitimate postal hold and a private person’s deliberate interference are not equivalent. If charged, obtain the actual charging document and review the mental state, mail connection, and other alleged offenses with counsel.
Primary sources
Sources checked: October 31, 2026.