The return receipt is a product in its own right rather than a line at the bottom of a certified mail bill. It attaches to a host service, it has to be bought when the piece is handed over, and it exists in two versions that fail in completely different ways. This page is about the mechanics: the manual sections behind them were read at pe.usps.com on 2026-07-28, and the fees live on our certified mail page.
One version travels with your letter and comes home signed. The other never leaves the postal system and lands in an inbox.
Both buy the same evidence: to whom the mail was delivered, the date of delivery, and information about the recipient's actual delivery address. Everything else about them differs, including one destination rule that removes the choice altogether.
| PS Form 3811, the green card | Electronic return receipt | |
|---|---|---|
| What you get | The card itself, signed, posted back to you | A delivery record by email, or as a signature extract file |
| What you do at mailing | Fill in the article number and your details, attach the card to the piece | Nothing physical; the request is attached to the host service |
| Envelope endorsement | The piece is endorsed "Return Receipt Requested" above the delivery address and right of the return address | No endorsement required |
| Postage effect | The weight of the card is excluded from the weight of the mailpiece when postage is computed | None |
| Where it cannot be used | No stated destination limit | Not available for items mailed to APO or FPO addresses, or to U.S. territories, possessions and freely associated states |
| How it can go wrong | The card is posted back through the ordinary mail and can be lost or delayed like any other letter | The record depends on the email address you gave and on the barcode link holding |
The APO, FPO and territories rule is the only one of those lines that makes the decision for you. A letter to a service address overseas or to Puerto Rico needs the card, and finding that out at the counter after the envelope is sealed is a wasted trip.
A return receipt rides on a host service. The manual's own table pairs it with Registered Mail, Certified Mail, COD, Signature Confirmation and higher value coverage, and the receipt's barcode has to be electronically linked to the separate barcode of that host service. Buying the receipt without the service underneath it is not a thing that exists.
DMM 503.6.1.1 requires the receipt to be purchased at the time of mailing. There is no way to decide two days later that you wanted proof, which is why the sensible habit for anything with a deadline attached is to buy the receipt every time rather than to judge each letter on its merits.
The manual asks for a complete return address on the mailpiece, and the card has to carry the article number and the address you want it sent to. A card filled in carelessly is a card that has nowhere to come back to, and nobody at the delivery end is going to work it out for you.
DMM 503.6.3 covers the case everybody eventually hits. If you paid for a return receipt and the card never turned up, you can ask for the delivery information at any Post Office within 90 days of the date of purchase, using PS Form 3811-A and proof that the fee was paid. Keep the mailing receipt somewhere you will find it, because that proof is the whole basis of the request.
Some lawyers, landlords and agencies want a signed card in a folder. That is a professional habit rather than a postal requirement, but it is a habit that will not be argued out of anybody, so send what the file wants.
A run of notices is easier to keep as records than as cards, and nothing has to be attached to each envelope by hand. The saving in labour is usually larger than the saving in fees.
Overseas service addresses and the territories are card-only. Look at where the letter is going before deciding which version to ask for.
It is the proof of payment behind any later request, and the article number on it is how the piece is found. Photograph it if the paper copy is likely to wander.
The evidence is narrow on purpose. It records a handover, and reading more into it than that is where disputes start.
It does not describe the contents. A signature says an envelope was accepted, not that the notice inside it was the one you meant to send, which is why senders who care keep a dated copy of the document alongside the receipt. It also carries no cover for what was in the envelope: protection against loss is a separate purchase with its own price ladder, and for anything with real value the shape of the answer is a parcel label with declared value rather than a letter with a card stapled to it.
The date deserves the same care. At a street address the signature is collected at the door, so the two dates agree. At a PO Box the piece waits behind the counter until the holder collects, and the receipt is dated that day. If a clock in a contract runs from delivery, that distinction is worth more than the fee.
It is an add-on that sends you back evidence of delivery: who the mail was delivered to, the date it was delivered, and information about the recipient's actual delivery address. It cannot stand on its own and has to be attached to a host service such as Certified Mail or Registered Mail.
PS Form 3811 is the green card. You fill in the article number, attach it to the mailpiece, and it travels with the letter, gets signed on delivery and is posted back to the return address you wrote on it. The weight of the card is excluded when postage on the mailpiece is worked out.
No, DMM 503.6.1.1 requires it to be purchased at the time of mailing. What exists afterwards is a different thing: a mailer who paid for a return receipt and never got the card can ask for the delivery information at any Post Office within 90 days of the date of purchase, using PS Form 3811-A and proof that the fee was paid.
No. The manual excludes items mailed to APO or FPO addresses and to U.S. territories, possessions and freely associated states, so those destinations need the paper card. It is the one limit that decides the choice for you rather than being a matter of preference.
That somebody signed for an envelope on a date, and where it was delivered. It says nothing about what was inside, and it carries no cover for the contents. Where the address is a PO Box the date on it is the date the holder came to the counter, which is not the date the piece reached the building.