Is It a Federal Crime to Open Someone’s Mail?

Yes, it is a federal crime to open someone’s mail when you do it on purpose. Three statutes in Title 18 of the U.S. Code cover the conduct, and the penalties run from one year in prison for a misdemeanor to five years for a felony. What determines which statute applies, and whether you face charges at all, is your intent and what you did with the mail after opening it.

The Three Federal Statutes

Federal law protects mail handled by the U.S. Postal Service through three overlapping provisions.

Obstruction of correspondence under 18 U.S.C. § 1702 is the statute most directly aimed at opening someone else’s mail. It prohibits taking mail from a post office, mailbox, or carrier before it reaches the addressee when you act with the purpose of obstructing delivery or prying into another person’s business. It carries up to five years in prison.¹

Theft of mail under 18 U.S.C. § 1708 covers stealing mail from any mailbox, post office, or mail route, and knowingly receiving or concealing stolen mail. All mail theft is a felony regardless of the value of the contents, with a maximum of five years in prison.²

Destruction of mail under 18 U.S.C. § 1703 is the lesser-known catch-all. It makes it a crime to open or destroy mail not addressed to you “without authority,” and it does not require proof of a snooping or obstructive intent. It is a misdemeanor punishable by up to one year in prison.³

Why Intent Matters

For the felony charge under § 1702, prosecutors must prove you acted with a specific purpose: to obstruct the delivery of correspondence or to pry into someone’s private affairs.¹ That requirement separates a federal felony from an everyday mistake.

Tearing open a letter without noticing the name on the envelope is not a crime. It happens routinely with mail for former residents. Reseal it, write “wrong address” on the outside, and drop it in outgoing mail. No prosecutor is coming after that.

Deliberately opening your spouse’s bank statements during a divorce to find hidden assets is the opposite situation. That is precisely the prying into private business the statute targets. The intent element usually turns on circumstances. Did you have any plausible reason to think the mail was yours, or did you know full well it wasn’t and open it anyway?

Even without snooping intent, opening or destroying someone else’s mail can still violate § 1703. The bar there is lower: the government only needs to show that you opened or destroyed mail not directed to you and had no authority to do it.

Penalties

A felony conviction under § 1702 or § 1708 carries up to five years in federal prison and a fine of up to $250,000 for an individual.¹⁴ A misdemeanor conviction under § 1703 caps out at one year in prison.³

If the offense produced a financial gain or caused a financial loss, the court can impose a fine of up to twice the gain or twice the loss, whichever is greater. That alternative can exceed the standard $250,000 cap when the mail involved significant value.⁴

Sentencing turns on facts. A single opened letter with no financial motive produces a very different outcome than someone systematically stealing credit card offers from an apartment building’s mailboxes. Volume, dollar value, and whether the tampering supports a larger fraud scheme all affect the sentence.

Restitution is mandatory when a mail crime causes identifiable financial loss to a victim. The defendant has to pay the value of damaged, lost, or destroyed property, plus the victim’s lost income and expenses tied to the investigation and prosecution.⁵

Criminal charges are not the only exposure. A person whose mail was opened can also sue for invasion of privacy. That civil claim exists on its own track, so the same conduct can produce a federal prosecution and a private lawsuit at the same time.

Common Situations

Spouses and Partners

Living together does not create legal authority to open each other’s mail. Each person’s correspondence is individually protected, and opening a partner’s credit card statements to monitor their spending is exactly the kind of prying § 1702 was written for.¹

Consent changes the picture. If your partner has told you to go ahead and open whatever arrives, or you have a longstanding household practice of doing so, there is no crime. Consent can be explicit or implied by habit. The trouble starts when one person has made clear they do not want their mail opened and the other does it anyway.

Roommates

The rule is the same. Sharing an address with someone gives you no authority to handle their correspondence. The simplest fix is an upfront agreement about how mail gets sorted.

Mail for a Former Resident

This is where § 1703 does most of its work. Throwing out a former tenant’s mail may feel trivial, but it is destroying mail not directed to you, which is a federal misdemeanor.³

Write “Not at this address” or “Return to sender” on the envelope and place it in an outgoing mailbox. If you already opened it by mistake, add “Opened in error” and send it back the same way. After a few returns, USPS will usually update its records and stop delivering that person’s mail.

Mail for Someone Who Has Died

The rule depends on where you live. If you shared the same address as the person who died, USPS allows you to open and manage their mail as needed, and you can forward individual pieces to an appointed executor without going to a post office.⁶

If you lived at a different address, you need documented proof that you are the appointed executor or administrator before USPS will let you manage the mail. A death certificate by itself is not enough. You have to go to a post office in person and submit a change-of-address request with your legal appointment paperwork.⁶

A Minor Child’s Mail

No federal statute specifically addresses parents opening mail addressed to their minor children. Parents are generally understood to have authority over their children’s affairs, and federal mail tampering prosecutions against a parent for opening a child’s mail are essentially unheard of. A parent opening a 12-year-old’s mail out of safety concern stands on different ground than a stranger intercepting someone’s correspondence. The legal picture gets less clear with older teenagers, so with any child old enough to receive their own mail, a conversation about expectations is safer than relying on assumed authority.

Packages from FedEx, UPS, and Amazon

The federal mail statutes protect correspondence handled by USPS. Sections 1702 and 1708 refer to mail taken from post offices, authorized depositories, and mail carriers. Packages delivered by FedEx, UPS, Amazon, or other private carriers do not travel through the postal system and generally fall outside these federal provisions.¹

That does not make it legal to open or steal someone’s private carrier packages. Theft and tampering with those deliveries are prosecuted under state theft and property crime laws. The penalties vary by state and usually depend on the value of what was taken. The practical difference is jurisdictional: USPS mail crimes go to federal postal inspectors and federal court, while private carrier package theft is handled by local police and state prosecutors.

Mail Sent to Your Workplace

Mail addressed to an employee at a business address sits in a gray zone. A 1981 Government Accountability Office review found no federal regulation prohibiting an employer from opening mail addressed to an employee at the employer’s address, as long as the envelope is not marked “personal” or “confidential.”⁷

The GAO recommended that mail marked personal or confidential be forwarded to the employee unopened, and that employers encourage staff to have personal mail sent to a home address or private post office box. If you are getting sensitive personal mail at work, redirect it to your home to remove any question about who can open it.

How to Report Mail Tampering

The U.S. Postal Inspection Service investigates mail crimes. File a report online or call 1-877-876-2455.⁸ Provide as much detail as you can: which pieces of mail were affected, when you noticed the tampering, any evidence pointing to who may be responsible, and photos if the mail was visibly opened or damaged.

Postal inspectors have full federal law enforcement authority and take patterns of mail theft seriously, especially when the facts suggest an ongoing scheme rather than an isolated incident. If a crime is actively in progress, call 911 before filing a postal inspection report.

1
Office of the Law Revision Counsel. 18 USC 1702 – Obstruction of Correspondence
2
Office of the Law Revision Counsel. 18 USC 1708 – Theft or Receipt of Stolen Mail Matter Generally
3
Office of the Law Revision Counsel. 18 USC 1703 – Delay or Destruction of Mail or Newspapers
4
Office of the Law Revision Counsel. 18 USC 3571 – Sentence of Fine
5
Office of the Law Revision Counsel. 18 USC 3663A – Mandatory Restitution to Victims of Certain Crimes
6
USPS. How to Stop or Forward Mail for the Deceased
7
U.S. Government Accountability Office. Matters of Mail Opening by Others Than Addressee
8
United States Postal Inspection Service. Report a Crime