Do You Have To Put A Return Address On A Letter?

Do you have to put a return address on a letter? No, you’re not required to include a return address. But without one, the Post Office won’t be able to return undeliverable letters to you.

It’s best to get into the habit of using a return address. Here’s why.

Is it Illegal to not Put a Return Address?

There is nothing in USPS’s documentation stating it’s illegal to omit a return address. However, the Post Office will require a return address under certain circumstances. Those include:

  • Sending official mail
  • Sending Priority Mail
  • Mail where you request return or address correction services
  • Mail or packages with a company’s permit imprint
  • USPS Retail Ground shipments
  • Insured mail
  • Mail that has precanceled stamps
  • COD (collect on delivery) letters and shipments
  • Priority Mail Express with requested return receipts
  • Mail that needs customs forms
  • Certified Mail with requested return receipts
  • Periodicals mailed in envelopes or opaque wrappers
  • Registered mail
  • Package Services

The Post Office doesn’t necessarily require the sender’s name to be in the return address. However, the complete address and zip code are necessary. If the sender’s address includes a suite, apartment, unit/condo, or room number, those details are also required.

What Happens if you Mail a Letter Without a Return Address?

One of two things happens if you mail a letter without a return address.

The letter will reach its intended destination if the Post Office can deliver it. But if the Post Office can’t deliver the letter for any reason, the letter will end up in a dead mail office.

A dead mail office is where undeliverable mail goes. Without a return address, the Post Office can’t deliver the letter back to you and will eventually discard the letter.

Furthermore, it’s possible to mail a letter to a person who no longer resides at the address on your letter. The new resident will probably discard the mail even if the address is correct. Normally, the person would write “return to sender” on the letter.

However, they can’t do this and have the Post Office return it if a return address isn’t on the envelope.

Can you Mail Something with a Different Return Address?

Yes, you can designate a different return address than your home address. If you’d rather use your work address or the home of a relative or neighbor, you can. In some cases, you can use a P.O. Box if you have one.

In fact, you could use an incorrect or made-up return address. But with some types of mail and packages, the Post Office may want to verify your return address in their system. Plus, if something goes wrong, your mail will end up in the dead mail office and get thrown away.

What Requires a Return Address?

Any piece of mail that you request address correction or return services with requires a return address. Most Priority Mail, Express Mail, certified mail, and packages shipped with the U.S. Post Office also require a return address.

The full list of mail pieces and packages that require a return address is under the “Is it illegal to not put a return address?” section.

What are the USPS Return Address Rules?

The USPS requires a full address at a minimum. You do not have to put your full name or include your name at all. If you’re mailing something on behalf of a company or organization, you also don’t need to include that name.

Instead of a name, some people use their initials or a variation of their initials above a return address. Although a name is not required, it can be helpful for Post Office employees if they need to return a letter or package.

For instance, sometimes a letter or number can be difficult to read. Perhaps there is a typo or an omission in the return address. Placing the name or the organization’s name above the return address can help Post Office employees return the mail or package to the correct address.

Q&A Section

Here are a few more questions regarding this topic that you might be interested in.

Q: What is my return address?

Your return address is the place you want the Post Office to redeliver mail or packages you send. The return address tells the Post Office where to return undeliverable mail or packages to.

A package or piece of mail can end up being undeliverable for multiple reasons. A person may refuse a piece of mail or package that requires a signature. Someone may also not be available to sign for the package or mail, even after several delivery attempts.

Another reason is that the recipient’s address doesn’t exist or is incorrect. While the Post Office can sometimes rectify incorrect addresses, there is no guarantee of this. If the building is vacant, for example, the Post Office probably won’t deliver mail to that address.

The Post Office usually has a record of addresses and mailboxes that are temporarily vacant or have been vacant for some time.

Yet another reason is the person or organization no longer exists at the address and the new occupant requests the Post Office to return the mail or package to the sender.

Q: Is it suspicious to not put a return address?

Generally, yes. People receiving the mail or package will wonder who sent it, what it contains, and whether they should trust what’s in the envelope or box.

Q: Can a letter be tracked without a return address?

You can usually track letters that have a tracking number. Most of the mail services that produce a tracking number, such as Priority Mail or Certified mail, require a return address.

Q: Where does the return address go on an envelope?

The return address usually goes in the top left-hand corner of the envelope. However, some people also put the return address on the back flap of an envelope. This is not the preferred location.


While it’s not always required to put a return address on a letter, it’s highly recommended. You don’t want to end up not getting a piece of mail back if the Post Office can’t deliver it.