Certified mail and sending letters online
Certified Mail is the USPS extra service people use when they need proof: a mailing receipt, tracking, and a signature at delivery. These guides explain what each piece proves and how to send one without a printer or a trip to the post office.
How does certified mail work and what proof do you get?
USPS Certified Mail is an extra service added to First-Class Mail or Priority Mail that gives you a mailing receipt with a unique tracking number and creates a delivery record, because the recipient (or their agent) must sign when it is delivered. If you also buy a Return Receipt, USPS sends you the signature and delivery date, either on the green card (PS Form 3811) or as an emailed PDF (electronic return receipt).
How do I send certified mail online?
To send certified mail online, upload or type your letter on a print-and-mail service, choose USPS Certified Mail (with or without a return receipt), pay, and the service prints the letter, applies a genuine USPS Certified Mail label and hands it to USPS. You get the USPS tracking number by email and, if you chose it, the return receipt with the recipient's signature.
Can I send certified mail without going to the post office?
Yes. The simplest way is a print-and-mail service: you upload or type the letter, choose Certified Mail, and the service prints it, attaches the USPS Certified Mail label and mails it, so you never touch paper, envelopes or forms. You still get the USPS tracking number and, if you add it, the electronic return receipt.
How much does certified mail cost in 2026?
Certified Mail costs three things added together: the First-Class Mail postage for your letter, the USPS Certified Mail fee, and (optionally) a Return Receipt fee, which is lower for the electronic version than for the green card. USPS changes these prices periodically, so check the current amounts on the official USPS price list (Notice 123) before you budget.
How do I get a return receipt for certified mail online?
Buy the electronic Return Receipt when you send the Certified Mail letter: after delivery USPS produces a PDF showing the recipient's signature, printed name, delivery address and date, which is emailed to you instead of a green card (PS Form 3811) coming back in the mail. When you send through us, choose "Certified + return receipt" and we email you the PDF.
Is online certified mail legally the same as post office certified mail?
Yes, as long as the letter is actually mailed with a USPS Certified Mail label: Certified Mail is one USPS service, and the tracking number, delivery record and return receipt are the same whether you paid at the counter or a print-and-mail company bought it for you. What changes is who prints and hands over the envelope, not the USPS proof.
What is the difference between certified mail and registered mail?
Certified Mail gives you proof of mailing and a delivery record with a signature, and is the usual choice for legal notices. Registered Mail is the most secure USPS service: the item is logged and kept under controlled custody at every step, can be insured for its declared value, costs more and is slower.
How do I track certified mail?
Enter the Certified Mail article number (printed on your PS Form 3800 receipt or in the email from your mailing service) at USPS Tracking on usps.com. The history shows when USPS accepted the letter, its movement, delivery attempts or notices left, and the delivery date.
Is there a service that prints and mails a letter for me?
Yes. Online print-and-mail services (SendMyLettersOnline, and others such as Click2Mail, LetterStream, Mailform, PostalMethods, Lob and PostGrid) take a letter you type or upload, print it, put it in an envelope with postage and hand it to USPS, usually as First-Class Mail or Certified Mail. Some are built for one-off consumer letters, others are APIs for businesses that mail in bulk.
Can I type a letter online and have it mailed?
Yes. You can type a letter in your browser, enter the sender and recipient addresses, preview it as a printed page, and pay; a print-and-mail service then prints it on paper and mails it by USPS. You need no printer, envelope, stamp or post office trip, and you can send it from a phone or computer.
What is the cheapest way to send a letter from my phone?
If you can print and walk to a mailbox, a First-Class Mail stamp is the cheapest way to send a letter (check the current stamp price on usps.com). If you only have your phone, the cheapest option is an online letter service that prints and mails it for one all-in price; ours is $3.99 for a First-Class letter of up to 3 pages.
Is Mailform worth it?
Mailform is an online service that prints and mails documents you upload, so it can be worth it if you send letters without a printer; whether it is the best value depends on its current per-letter price, how it charges for Certified Mail and return receipts, and whether you want a subscription or to pay per letter. Check its current pricing on its own site and compare the all-in total with alternatives like ours ($3.99 First-Class, $14.99 Certified, $17.99 with return receipt).
What is the fastest way to mail a legal document?
The fastest options are overnight services: USPS Priority Mail Express (overnight to 2-day delivery to most US addresses, with tracking and a signature option) or FedEx and UPS overnight services, sent from a counter before that day's cutoff. Certified Mail is not faster than regular First-Class Mail; it adds proof of mailing and delivery, not speed.
How do I mail a letter?
Put the recipient's name and address in the center of the envelope, your return address in the top-left corner, and a First-Class Mail stamp (a Forever stamp works) in the top-right corner, then drop it in a blue USPS collection box, your mailbox with the flag up, or a post office. A standard letter weighing up to 1 ounce needs one stamp; heavier or odd-shaped envelopes need more postage.
How do I prove I sent a letter before a deadline?
Get dated proof from USPS when you mail it: a Certified Mail receipt (postmarked or with a USPS acceptance scan) or a Certificate of Mailing (PS Form 3817) shows the date the letter entered the mail. Whether mailing on time is enough depends on the rule: federal tax law treats a timely mailed document as timely filed (26 U.S.C. 7502), while many contract and court deadlines count the day it is received.
How do I send a certified letter in the US while living abroad?
USPS Certified Mail is a domestic service, so you cannot buy it at a foreign post office; the practical way is an online print-and-mail service that prints your letter in the US and mails it there with a USPS Certified Mail label. You pay online from anywhere, and the tracking number and return receipt are emailed to you.
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