Everything You Need to Know About USPS Certified Mail

Last Reviewed: October 2026

USPS Certified Mail is an add-on service that gives you proof of mailing and proof of delivery for important letters. Each piece gets a unique tracking number, USPS records a signature when it is delivered, and you keep receipts you can produce in a dispute, an audit, or a courtroom. Whether you mail one notice a year or thousands a month, this guide covers how it works, what it costs, who can sign, and how to print Certified Mail labels online without a Post Office trip.

What Is USPS Certified Mail?

Certified Mail is a domestic USPS extra service you add to First-Class Mail or Priority Mail postage. It provides:

• A unique tracking number for every article.
• A mailing receipt showing the date the piece was accepted, your proof of mailing.
• A signature at delivery, your proof of delivery.

Certified Mail is the service of choice for law firms, government agencies, HR teams, property managers, lenders, insurers, healthcare organizations, and anyone else who needs a reliable record that an important document was sent and delivered. For the definitional deep dive, see What Is Certified Mail? A Complete Overview.

What Does Certified Mail Cost?

Certified Mail pricing is set by USPS and changes with each price adjustment, so we keep live figures in one place instead of quoting numbers that go stale. See current pricing for Certified Mail, Return Receipt, Electronic Return Receipt, and Restricted Delivery at USPS postal rates. The takeaway that does not change: sending online costs less per letter than the Post Office counter, with no monthly fees, contracts, equipment leases, or postage meter.

How To Send USPS Certified Mail: The Traditional Process

Step 1: Prepare Your Item

Seal and address your envelope, and double-check the recipient's name, street or box number, and ZIP Code. Addressing errors are a leading cause of delays and returns.

Step 2: Fill Out PS Form 3800 at the Post Office

At the counter, you complete PS Form 3800, the Certified Mail form with its perforated mailing receipt. The receipt carries the tracking number and mailing date, which serve as your proof of sending. You pay the Certified Mail fee plus postage, then wait in line.

Step 3: Track the Item en Route

USPS scans the piece at acceptance and as it moves through sorting facilities. You can follow the scans online or by phone using the tracking number.

Step 4: Signature at Delivery

The carrier obtains a signature before releasing the piece. If no one is available to sign, the carrier leaves a notice and the piece is held at the Post Office, typically for 15 days, for pickup. If it is not claimed, USPS returns it to the sender. USPS retains the delivery signature record for two years.

The Better Way: Create and Print Certified Mail Labels Online

Everything the traditional process produces, you can produce faster and cheaper online with Certified Mail Labels:

• You'll create and print USPS-approved Certified Mail labels with live postage on a standard printer.
• You'll drop your letter in any mailbox or collection box, no counter visit required.
• You'll receive Electronic Delivery Confirmation Reports by email as each piece is delivered or attempted.
• You'll capture Return Receipt signatures electronically instead of waiting for a green card to mail back.
• You'll keep proof of mailing, tracking files, and signatures in a complimentary 10-year compliance archive.
• You won't pay monthly fees, contracts, equipment leases, or postage meter costs, and you'll save versus counter rates on every mailing.

Check the step-by-step instructions once and you are set for every mailing after.

Tracking, Return Receipts, and Who Can Sign

Tracking Your Certified Mail

Every Certified Mail piece is scanned at acceptance, in transit, and at delivery or attempt. You can check status any time at Certified Mail Tracking, and online platform users get status updates pushed by email instead of hunting for them.

Return Receipt Options

A Return Receipt documents the recipient's signature. The traditional version is the paper green card (PS Form 3811) mailed back after delivery; the Electronic Return Receipt delivers the signature as a PDF to your account instead, faster and easier to store. You can also add Restricted Delivery, which requires USPS to deliver only to the addressee or the addressee's authorized agent. For details, see Electronic Return Receipt for Certified Mail.

Who Can Sign for Certified Mail?

With standard Certified Mail, anyone who receives mail at the address may sign: a family member, coworker, or receptionist. With Restricted Delivery, only the addressee or a person authorized in writing as the addressee's agent may sign, and USPS may require photo ID. For the complete rules, see Who Can Sign for Certified Mail?

What Happens When Things Go Sideways

• No one signs: notice left, piece held at the Post Office, typically 15 days, then returned to sender. Details in What Happens If Certified Mail Is Not Signed For?
• Never delivered: the same hold-and-return flow applies, and the tracking record documents every attempt. Recovery steps in What Happens to Certified Mail That Is Not Delivered?
• PO Box recipient: a notice goes in the box and the recipient signs at the counter. Walkthrough in Can You Send Certified Mail to a PO Box?

High-Volume Certified Mail: Batch, Print & Mail, and Automation

If you send Certified Mail at scale, manual preparation does not scale with you. Certified Mail Labels gives you three ways to automate:

• Excel batch labels: upload your address list and generate labels for every recipient at once. See Excel Batch Labels.
• Print & Mail full service: upload your PDF and address list, and we print, insert, apply postage, and hand your letters to USPS the same business day for orders by 5:00 PM Eastern, with a notarized affidavit of mailing. See Print & Mail.
• API and SFTP automation: connect your business systems directly so mailings flow without manual uploads, complete with USPS SCAN Forms. See API & SFTP Automation.

Frequently Asked Questions