Send USPS Certified Mail online
Certified Mail exists to prove a letter was sent, and proving it should not require a trip to the post office. MatterSnail sends USPS Certified Mail from the browser: upload the document, add the recipients, and the letters are printed, stuffed, and handed to USPS the same business day, with the proof flowing back to your account.
How it works
Upload the document
Attach your letter as a PDF. MatterSnail prints it, stuffs the envelope, and addresses it. No printer, no green cards to fill in, no line at the counter.
Add the recipients
One recipient or up to 100 in the same mailing, typed one at a time or pasted from a spreadsheet. Each person gets an individually addressed certified letter.
USPS takes it the same day
Submit before the 12:50 p.m. Pacific cutoff and the mailing is handed to USPS the same business day. Tracking starts at acceptance.
The proof that comes back
Certified Mail is only as good as its paper trail. Every certified letter sent through MatterSnail comes with:
- An individual USPS tracking number for every recipient, with each scan from acceptance to delivery
- A downloadable Certificate of Acceptance showing USPS accepted each certified letter
- An electronic return receipt with the recipient signature, when you choose the signature option
- A Proof of Service on any mailing, ready for a court file
Everything the mailing needs
A signature when you need one
Send Certified Mail with an electronic return receipt and USPS captures the recipient signature, replacing the physical green card. Or send plain certified when a signature is not required.
First-Class and Priority too
Not everything needs to be certified. Send USPS First-Class or Priority Mail from the same mailing screen, and mix services across recipients.
Your whole team
Invite your team to the firm account and anyone can prepare and send. The Free plan includes up to 3 users with no monthly fee.
A record of every letter
Every mailing keeps its documents, recipients, scan history, and certificates in one place, ready when someone asks what was sent, to whom, and when.
What people send certified
Demand letters, statutory notices, lease terminations, contract cancellations, and anything else where you may later have to prove the letter went out. Practices with heavy notice requirements have their own pages: probate notices, HOA notices, and creditor matrix mailings.
Common questions
How do I send Certified Mail online?
Upload your document as a PDF, add one recipient or paste a whole list, and submit. MatterSnail prints the letter, stuffs the envelope, and hands it to USPS as Certified Mail. Submissions before the 12:50 p.m. Pacific cutoff go out the same business day.
How long does Certified Mail take to arrive?
Certified Mail travels as USPS First-Class Mail, which typically delivers in 3 to 5 business days. Every recipient gets an individual tracking number, so you can watch each scan from acceptance to delivery.
Do I get a return receipt with a signature?
Yes. Choose Certified Mail with an electronic return receipt and USPS captures the recipient signature, which replaces the physical green card. You can also send plain Certified Mail without one when a signature is not required.
What proof do I get that the letter was mailed?
Every certified letter includes a downloadable Certificate of Acceptance showing USPS accepted the piece, plus individual delivery tracking. Any mailing can also include a Proof of Service for a court file.
How much does it cost to send Certified Mail online?
You pay exact USPS postage plus a per-piece service charge, itemized before you submit. There is no subscription required: the Free plan has no monthly fee and includes every mailing option.
Can I send the same letter to many recipients at once?
Yes. Upload the document once and add up to 100 recipients to the same mailing, typed one at a time or pasted from a spreadsheet. Each person gets an individually addressed letter with its own tracking number and certificate.
Wondering about timing? Read the guide on how long Certified Mail takes.
Send your next certified letter from your desk. Create an account and mail the first one in minutes. The Free plan has no monthly fee.
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