Certified mail is a USPS service that gives you a dated mailing receipt, end-to-end tracking, and, if you want it, the recipient’s signature on delivery. The base fee is $5.30 on top of regular postage, with a return receipt adding $2.82 electronically or $4.40 for the physical green card.1United States Postal Service. Notice 123 – January 2026 Price Change It’s available only for domestic First-Class Mail and Priority Mail, and it exists to answer one question later: can you prove you sent it?2United States Postal Service. Certified Mail – The Basics
When to Use Certified Mail
Ordinary mail leaves no trace. Certified mail generates a receipt at the counter, logs every scan along the route, and can capture a signature at the door. That combination matters in a handful of recurring situations: lease terminations, demand letters, cease-and-desist notices, insurance claims, and debt disputes. Many contracts and statutes require written notice “by certified mail,” so it’s often the expected method rather than a precaution.
Tax filings are a particularly important case. Under federal law, sending a return or payment by registered or certified mail creates prima facie evidence of delivery to the IRS, and the postmark date is treated as the filing date.3Office of the Law Revision Counsel. 26 USC 7502 – Timely Mailing Treated as Timely Filing and Paying If you mail a return close to the deadline, that postmark can be the difference between a timely filing and a penalty.
What It Costs in 2026
Every certified mailpiece costs regular postage plus the $5.30 certified mail fee. A standard one-ounce First-Class letter is $0.78 in postage, so the minimum out-of-pocket for a single certified letter with no add-ons is $6.08.1United States Postal Service. Notice 123 – January 2026 Price Change
- Return receipt, physical green card: $4.40 (total for a one-ounce letter: $10.48)
- Return receipt, electronic: $2.82 (total: $8.90)
- Certified Mail Restricted Delivery: $13.70, which bundles the certified mail fee with restricted delivery and a return receipt
The electronic return receipt is cheaper, easier to store, and provides the same information as the green card: the recipient’s signature image and the delivery date.1United States Postal Service. Notice 123 – January 2026 Price Change Unless you specifically need a card with a wet-ink signature, the electronic version is the practical choice.
How to Send It
You need three things: the recipient’s full name and address, your return address, and the right USPS forms. The core form is PS Form 3800, the green-and-white Certified Mail Receipt, free at any post office. Its barcode sticker goes on the front of the envelope, typically to the left of the postage area.2United States Postal Service. Certified Mail – The Basics If you want signature proof, add PS Form 3811, the Domestic Return Receipt. The physical green card attaches to the back of the envelope; the electronic option replaces it with a PDF sent to your email.
Fill out every address field carefully. A wrong apartment number or misspelled name can derail delivery and undermine the whole point of the service. Check the ZIP code against the USPS address lookup tool before sealing the envelope.
At the Post Office
Bring the sealed, addressed envelope with completed forms to the counter. The clerk postmarks your receipt and activates the tracking number. You pay regular postage plus the certified fee and any add-ons. Keep the stamped receipt. That slip is your proof of the mailing date, and losing it means losing the core benefit of the service.2United States Postal Service. Certified Mail – The Basics
Online Through Click-N-Ship
USPS also sells certified mail labels online at usps.com through Click-N-Ship. Enter the recipient’s address, select certified mail as an extra service, pay electronically, and print the label at home. You still need to hand the piece to a postal employee or drop it where it will be scanned into the system. The online route is useful if you send certified mail regularly and want digital records from the start.
Restricted Delivery and Who Can Sign
Standard certified mail can be signed for by anyone at the delivery address. Restricted delivery limits acceptance to the addressee personally or their authorized agent, and the carrier may ask for valid photo identification before handing the mail over.4United States Postal Service. What is Restricted Delivery? Use it when you need to prove that a specific person received the document, not just that something arrived at their house and a roommate signed for it.
Tracking, Delivery Times, and Proof
Every certified mailpiece gets a unique tracking number printed on the mailing receipt. You can check status online at usps.com or by phone. The system logs each scan from acceptance through every sorting facility to final delivery.2United States Postal Service. Certified Mail – The Basics
Certified mail travels at the speed of whatever class you pair it with. A First-Class certified letter takes the same two to five business days as any First-Class letter. If you need it faster, pair it with Priority Mail, which typically arrives in one to three business days.2United States Postal Service. Certified Mail – The Basics
Once delivered, you get whatever verification you selected. The green card returns through the mail with the recipient’s handwritten signature and the delivery date. The electronic version delivers the same information as a downloadable PDF. Either format works as evidence in legal proceedings that a party received notice. Scan or photograph the green card the day it arrives; that piece of cardstock is easy to lose in a file drawer.
If the Mail Is Refused or Unclaimed
If the carrier can’t deliver the piece, USPS leaves a notice (PS Form 3849) and holds the item at the local post office for 15 calendar days. A second and final notice goes out five days after the first. If no one picks it up or schedules redelivery within the 15-day window, the mailpiece goes back to the sender.5United States Postal Service. What are the Second and Final Notice and Return Dates for Redelivery
Recipients can also flatly refuse certified mail. When that happens, the carrier marks it “Refused” and returns it. In many legal contexts, refusal or an unclaimed letter still counts as effective notice. Courts often view a deliberate refusal to accept properly addressed certified mail as evidence that the recipient was aware of the correspondence and chose to avoid it. A tracking record showing “Refused” or “Unclaimed” can support your case rather than sink it.
Certified Mail vs. Registered Mail
People mix these up constantly, but they solve different problems. Certified mail proves you sent something and, with a return receipt, that it arrived. Registered mail does that too, and adds physical security and insurance for valuable contents. Registered mail travels under lock and chain-of-custody procedures from the moment it enters the postal system and can be insured for up to $25,000, which makes it the right choice for jewelry, original legal documents, or anything with significant replacement value. The tradeoff is higher cost and stricter packaging. For a standard legal notice, demand letter, or tax return, certified mail does the job at a fraction of the price.