To send certified mail with a return receipt through USPS, pick up PS Form 3800 and PS Form 3811 at any post office, fill them out, attach them to your envelope, and hand the item to a clerk so your receipt gets postmarked. For a one-ounce First-Class letter in 2026, the total is about $10.48: $0.78 postage, $5.30 for Certified Mail, and $4.40 for the physical green-card return receipt. Choosing the electronic return receipt instead brings it to $8.90.
The Two Forms You Need
Both forms are free at the post office counter.
PS Form 3800 is the Certified Mail receipt. It carries a peel-off barcode label with a unique article number, and once stamped by a clerk it becomes your proof that you mailed the item on a specific date.
PS Form 3811 is the green card that rides along with your mailpiece, gets signed by whoever accepts delivery, and comes back to you as proof the item arrived.
Filling Out PS Form 3800
Write the recipient’s full name and address in the “Sent To” section, and your own name and address in the sender section. The barcoded label at the top of the form is what turns your envelope into a tracked, certified piece. Peel it off and stick it to the front of the mailpiece. Hold on to the rest of the form; that’s your receipt.
Filling Out PS Form 3811 (the Green Card)
In item 1, print the recipient’s name and address. Flip the card over and print your own name and address on the back so USPS knows where to send it after it’s signed. In item 2, copy the article number from PS Form 3800 onto the green card. That number is what links the return receipt to your specific piece.
Attach the green card to the back of the envelope. If the back is crowded, the front works too, as long as it doesn’t cover the address or the barcode label.
Take It to the Counter, Not the Blue Box
Technically, once postage and fees are paid and the forms are attached, you can drop a certified mailpiece into a collection box, a street letterbox, or your own mailbox for carrier pickup. There’s a real problem with that shortcut. Your PS Form 3800 receipt won’t carry a USPS postmark, and the form itself warns that a postmarked receipt is what makes it legal proof of mailing.
For anything with legal weight, a demand letter, a lease termination, an IRS response, take it to the counter. The clerk will weigh the item, confirm postage, scan the barcode into the tracking system, and postmark your receipt. That date stamp is what a court or agency will look to if the mailing date is ever contested.
Physical or Electronic Return Receipt
You choose between the two at the time of mailing.
The physical return receipt is the green card itself. After delivery, the recipient or an authorized agent signs it, and USPS mails the signed card back to your address. It’s tangible, easy to file, easy to hand to a lawyer. It costs $4.40 in 2026, and you wait for it to travel back through the mail.
The electronic return receipt costs $2.82 and sends the signature record to your email. You get a link to the tracking page and a proof-of-delivery letter as an attachment. If you request the electronic version before delivery happens, the email usually arrives within 48 hours of delivery; if you request it after delivery, it often comes within hours.
One boundary worth knowing: electronic return receipts are not available for deliveries to APO, FPO, or DPO addresses, or to certain U.S. territories. For those destinations, the physical green card is the only option.
Tracking the Piece
Once the clerk scans your item, the article number on PS Form 3800 becomes a live tracking number. Enter it on the USPS Tracking site or in the USPS mobile app to follow the piece through processing, arrival at the destination post office, and delivery.
When the signed green card arrives back in your mailbox, it shows the recipient’s signature, the printed name of the person who signed, the date of delivery, and whether the delivery address differed from what you wrote on the form. File it with your PS Form 3800 receipt. Together, the two documents cover the full chain from mailing to delivery.
If No One Is Home
Certified mail requires a signature, so the carrier can’t leave it at the door. If no one answers, the carrier leaves a delivery notice slip and the recipient has a window, typically around 15 days, to pick the item up at their local post office. If it goes unclaimed, USPS returns the piece to you. Your tracking record will show the attempted deliveries and the return, which can itself serve as evidence that you tried.
If the Recipient Refuses It
A recipient can refuse certified mail at the moment of delivery. The carrier endorses the piece as refused, USPS treats it as undeliverable, and it comes back to you. Once certified mail has actually been delivered and accepted, though, the recipient can’t later refuse it and send it back postage-free.
A refusal isn’t a wasted mailing. In many legal contexts, a refused certified letter still counts as proper notice, because the recipient had the chance to accept it and chose not to. The tracking record will show the refusal.
Making Sure a Specific Person Signs
Standard certified mail can be signed for by anyone at the address, a spouse, a roommate, an office receptionist. If you need the named addressee to sign personally, add Restricted Delivery. The carrier will then release the item only to the addressee or their authorized agent.
Restricted Delivery for certified mail costs $13.70 in 2026, on top of the other fees. A one-ounce letter with the physical return receipt and Restricted Delivery adds up to $24.18. It’s a steep add-on, but for serving legal documents or handling sensitive correspondence where you need proof that a specific individual received the piece, it does what nothing else does.