Sending certified mail at the post office is a five-minute errand once your envelope and forms are ready: fill out PS Form 3800, add PS Form 3811 if you want a signed receipt returned, hand everything to a USPS clerk, and pay $5.30 plus regular postage. You leave with a date-stamped receipt and a 20-digit tracking number that follows the piece to the recipient’s door. The service works only with domestic First-Class Mail and Priority Mail, so it is not an option for anything going overseas.1PostalPro. Certified Mail Guidebook
Forms to Fill Out Before You Arrive
Two forms do the work. PS Form 3800 is the Certified Mail Receipt itself. PS Form 3811 is the green Return Receipt card, and you only need it if you want a signed proof of delivery mailed back to you. Both are free at any post office counter, and PS Form 3800 can also be printed from the USPS website.
On PS Form 3800, write the recipient’s full name and mailing address. Peel the adhesive backing and stick the form on the front of your envelope, above the delivery address and to the right of the return address. Leave the upper-right corner clear for postage.
If you’re adding PS Form 3811, write the recipient’s address in Box 1 and your own address on the back of the card. A barcode strip on PS Form 3800 peels off and goes on Box 2 of the green card, linking the two. Check the “Certified Mail” box in Box 3, then attach the card to the back of a letter or the front of a package where it won’t cover the delivery address.
What It Costs
Every certified mailpiece pays regular postage plus the certified service fee. Add-on fees as of January 2026:2Postal Explorer. Notice 123 – Price List
- Certified Mail service: $5.30
- Return Receipt, hard copy (PS Form 3811): $4.40
- Return Receipt, electronic: $2.82
- Restricted Delivery: $13.70 (includes the certified mail fee)
A typical certified letter with a physical return receipt runs about $10 to $11 once postage is added. Skip the return receipt and rely on online tracking, and you pay only the $5.30 fee on top of postage.
Handing It to the Clerk
Bring the prepared mailpiece and forms to a USPS clerk. Presenting the item to a postal employee is required if you want the postmarked sender’s receipt.3United States Postal Service. Shipping Insurance and Delivery Services The clerk weighs it, applies postage, stamps your receipt with the date, and hands back your portion of PS Form 3800. That tear-off is your proof of mailing, and the 20-digit number printed on it is your tracking number. Keep it somewhere safe.
Some post offices have self-service kiosks that can process certified mail, which helps when the counter line is long.4United States Postal Service. Skip the Trip in Line Self-Service Kiosk Live Demo Not every kiosk offers the service, so ask a clerk before committing to the machine.
Tracking and Saving Proof
Enter the 20-digit tracking number at usps.com or in the USPS mobile app. The page updates at each scan: acceptance, sorting facility arrivals, out-for-delivery, delivery attempts, and final delivery. Phone tracking is available through USPS customer service too.
USPS keeps certified mail tracking records available online for roughly two years. If you need proof of mailing or delivery for legal or compliance reasons past that window, save or print the tracking page and any delivery confirmation emails as soon as you have them. Waiting until a dispute arises is where most people get burned.
Getting Proof of Delivery
Every certified mailpiece requires a signature from the recipient or someone authorized to accept mail at that address before USPS will release it.5United States Postal Service. USPS Mail Requiring a Signature – Accountable Mail That signature enters the tracking record. On its own, certified mail gives you the mailing receipt and electronic delivery confirmation, but not a copy of the actual signature.
To get the signature itself, add a return receipt. The physical Return Receipt (PS Form 3811) comes back to you as the signed green card, showing who signed, the delivery date, and the delivery address.6USPS. Domestic Return Receipt Forms The electronic return receipt arrives as an emailed PDF with the same delivery details and a digital image of the signature.7United States Postal Service. Field Information Kit – Return Receipt Electronic The electronic version costs $1.58 less and arrives faster.
Restricted Delivery
To guarantee that only the named recipient personally signs, add Restricted Delivery. This blocks a spouse, assistant, or other household member from accepting on their behalf.8United States Postal Service. What is Restricted Delivery At $13.70 total, it costs more, but it’s the usual approach for legal notices that need proof a specific person received the document.
PO Box Recipients
Certified mail sent to a PO Box still needs a signature. USPS puts a notification slip in the box, and the recipient picks up the piece at the counter with identification. Delivery can lag if the recipient doesn’t check the box regularly.
If the Recipient Refuses or Doesn’t Pick It Up
If the recipient refuses the letter or never picks it up, USPS returns it to you at no extra charge. The carrier endorses the envelope with a reason such as “Refused” or “Unclaimed” and sends it back as ordinary First-Class Mail. A refused or unclaimed piece typically sits at the local post office for about 15 days before being returned.
Your original mailing receipt still proves you sent the item and when, which matters in legal contexts where the act of sending counts regardless of whether the other party accepted delivery. Courts generally treat a properly addressed, refused certified letter as adequate notice.
When to Use Registered Mail Instead
Certified mail and registered mail get confused often. Certified mail proves you sent something and tracks whether it was delivered. Registered mail does all of that and adds maximum physical security in transit, with a chain of custody covering every postal employee who handles the piece.
Registered mail starts at $19.70 and includes insurance for contents valued up to $50,000, which is the reason to use it for jewelry, original documents with intrinsic value, or other irreplaceable items.3United States Postal Service. Shipping Insurance and Delivery Services Certified mail travels through the system like regular mail and carries no insurance.1PostalPro. Certified Mail Guidebook For legal notices, contracts, tax filings, and paperwork with no cash value, certified mail is the practical and far cheaper choice.