Certified mail slips — officially PS Form 3800 — are free at any USPS post office counter and free to order in packs of 10 from the USPS Postal Store online. The form itself costs nothing; the certified mail service costs $5.30 on top of regular postage as of January 2026, and it buys you a mailing receipt, a tracking number, and a signature from whoever receives your letter.
Where to Pick Up PS Form 3800
Walk into any post office and ask at the customer service counter, or check the self-service area in the lobby. Many branches keep common forms out where you can grab them without waiting in line. If you’re not sure which form you need, a clerk can point you to the right one.
You can also order the forms online through the USPS Postal Store. They ship in packs of 10 at no cost and arrive in two to five business days via USPS Ground Advantage. 1United States Postal Service. Certified Mail Receipt Forms Ordering a few packs in advance saves a trip if you send certified mail more than occasionally.
What Certified Mail Actually Costs in 2026
The slip is free, but the service isn’t. For a standard one-ounce letter as of January 2026, expect to pay:
- First-Class postage: $0.78 for a one-ounce letter
- Certified mail fee: $5.30
- Return receipt, hard-copy green card: $4.40
- Return receipt, electronic: $2.82
- Restricted delivery: $13.70, which limits delivery to the specific addressee or their authorized agent
A basic certified letter with an electronic return receipt runs about $8.90 total. Add a physical green card and it’s roughly $10.48. These fees apply per item, on top of whatever postage the mailpiece needs. 2United States Postal Service. Notice 123 – Price List
How to Fill Out PS Form 3800
Each form has a pre-printed 22-digit tracking number. That number is what you’ll use to monitor delivery and prove the letter was sent. 3United States Postal Service. USPS Tracking
- Write the recipient’s full name and complete mailing address on the form. It must match the envelope.
- Put your name and return address in the designated sender area. If you’re adding a return receipt, the Domestic Mail Manual requires a sender name and complete delivery address on the mailpiece itself.4United States Postal Service. DMM 503 Extra and Additional Services
- If you’re adding a return receipt, write the return receipt fee on the mailing receipt portion of the form.
Don’t rush the address fields. A wrong ZIP code or a missing apartment number can send your letter into limbo, and you’ll still have paid the fees.
Attaching the Slip and Adding a Return Receipt
Peel the adhesive backing and stick the green barcode label portion of PS Form 3800 on the envelope, above the delivery address and to the right of the return address. The barcode has to stay fully visible. The form has a dotted fold line to help with placement. 4United States Postal Service. DMM 503 Extra and Additional Services
Adding a hard-copy return receipt? That’s PS Form 3811, the green card. Peel the thin tracking number strip from PS Form 3800 and stick it onto the green card in the “Article Number” box. Attach the green card to the front of a large envelope or package, or to the back of a standard letter-size envelope, making sure it doesn’t cover the delivery address. Write “Return Receipt Requested” near the certified mail endorsement on the address side of the envelope. 4United States Postal Service. DMM 503 Extra and Additional Services
How to Send It
You don’t have to hand certified mail to a clerk. Under the Domestic Mail Manual, you can mail a certified piece at the post office, give it to a rural carrier, or deposit it in a collection box, street letterbox, or any other receptacle that accepts First-Class Mail. 5United States Postal Service. Domestic Mail Manual S912 – Certified Mail
The counter still has one real advantage: a postmarked receipt. When you hand the piece to a clerk, they round-date stamp your receipt, giving you proof of the exact date USPS accepted the letter. 4United States Postal Service. DMM 503 Extra and Additional Services If your letter has a legal deadline attached, like a contract cancellation, a dispute response, or an IRS filing, that dated postmark is the whole reason you’re using certified mail. Drop the letter in a blue box and it still goes, but you don’t get a dated stamp on your receipt, and the tracking scan may not register until the next pickup.
Before you mail, confirm enough postage is affixed to cover First-Class, the $5.30 certified fee, and any add-ons. Short postage means the letter comes back.
Tracking and Proof of Delivery
The 22-digit number on your receipt lets you follow the letter from acceptance to delivery on the USPS Tracking page or by calling USPS. The carrier collects a signature from the recipient at delivery, and that event appears in the tracking record. 4United States Postal Service. DMM 503 Extra and Additional Services
If you paid for a hard-copy return receipt, USPS mails the signed green card back to you. If you chose the electronic return receipt, the delivery confirmation and signature image arrive by email. The electronic version costs less, arrives faster, and is accepted as proof of delivery in the same situations the green card is.
If You Send Certified Mail Often
Paper forms get old fast if you send certified mail regularly. Several third-party services let you print certified mail labels with digital postage from a standard printer. The platform generates a USPS-compliant barcode, handles postage electronically, and assigns a tracking number. Some also produce electronic return receipts and store delivery records online.
The workflow is straightforward: enter the recipient’s address, print a cover sheet or adhesive label, insert your documents into a certified mail window envelope, and drop the sealed envelope at any USPS location or collection box. You skip the counter because postage is already paid and the barcode is already scannable.
USPS also sells a non-barcoded certified mail label, Label 3800-N, through its Postal Store for mailers who generate their own shipping labels with an Intelligent Mail package barcode. 4United States Postal Service. DMM 503 Extra and Additional Services That option is aimed at businesses with existing shipping software rather than individual senders, but it’s worth knowing about if you handle high volumes.