Send by email
Send real mail from your inbox.
Forward an email. Get a quote back. Reply to confirm. USPS delivers.
Opens your mail app with the recipient, return-address, and letter fields already started.
To: mail@sendpaperplane.com
Subject: Mail a letter
TO: Ada Lovelace
101 Spear St
San Francisco, CA 94105
Please find enclosed the signed lease renewal for the coming year.
USPSHow sending from email works.
Forward an email. Get a quote back. Reply to confirm. USPS delivers.
- Step 01
Write it like an email
Start with a TO: block for the recipient and a FROM: block for your return address, or write it in plain language. Paste the letter word for word under SEND EXACTLY:, or describe it under DRAFT FOR ME: and paperplane drafts it.
- Step 02
Get a quote back
paperplane replies in the thread with one all-in price for that exact letter. Nothing is printed, charged, or mailed yet.
- Step 03
Reply to confirm. It ships.
Reply yes to that specific quote. paperplane prints it, seals it, and hands it to USPS, then emails back the tracking link.
Certified Mail, minus the trip.
Same USPS service, same proof of mailing. What changes is the printer, the envelope, the form and the line.
| What | paperplane | At the counter |
|---|---|---|
| Printer, envelope | not needed | yours |
| PS Form 3800 | done for you | by hand |
| Address check | before you pay | Not available |
| Time | 2 min | 10 min + line |
| Proof of mailing | emailed, kept | a paper slip |
| Price, all in | $12.99 | fees + your costs |
›See the long version
Certified Mail, at the counter
- Write the letter, print it, and find an envelope that fits it.
- Address it by hand — including a return address, which USPS requires on every certified piece.
- Drive to the post office during opening hours and join the line.
- Fill in PS Form 3800 at the counter, peel it, and stick it on the envelope yourself.
- Decide at the window: the paper green card (PS Form 3811) or the electronic Return Receipt.
- Pay at the window, in cash or card, plus your own printing and envelope.
- Keep the stamped Form 3800 somewhere you will still have it in a year. It is your only proof of mailing.
Ten minutes at the counter with no line. Then do it again for the next recipient.
Certified Mail, from where you are
- Paste the letter, or upload the PDF.The composer renders the exact pages that will print — fonts, pagination, everything.
- Type the two addresses.Both are checked against USPS data before you are asked to pay.
- Pay $12.99, or $14.99 with the electronic Return Receipt.We print it, seal it, and hand it to USPS the next business day. Tracking number by email.
About two minutes. No form, no line, no slip to keep.
Or hand it to an assistant: the same send runs over MCP, the API, or the CLI.
$14.99, or the trip.
- paperplane
- $14.99 all in, with the electronic Return Receipt, sent from wherever you are and handed to USPS the next business day.
- At the counter
- The same USPS fees, plus your printer, an envelope, the drive, the line and PS Form 3800 by hand.
The fees go to USPS either way. The $14.99 buys not making the trip.
Built for three kinds of sender.
Three jobs, one send flow, one all-in price. Each links to the guide that goes deeper.
People who need it to hold up
The letter is the evidence: Certified Mail, a checked address, and a tracking page you can hand to a lawyer.
For the letter that has to hold up →People mailing for other people
Upload a CSV of clients or tenants; every row becomes its own individually addressed letter.
For mailing a list without mail-merge →Developers and AI agents
An MCP endpoint and REST API with a free sandbox. A person approves every payment link.
For the agent and developer docs →
Four sends, start to finish.
We haven't launched, so there is no one to quote yet. These are written examples of jobs the product does today: the people are made up, the capabilities are not.
A solo founder sending a contract notice
The agreement says notice by certified mail, return receipt requested — so that is exactly what gets picked, and the receipt records both the mailing and who signed for it. Certified envelopes never carry our mark, so the letter arrives looking like it came from the company that sent it.
A property manager mailing 40 tenants the same notice
A CSV export becomes 40 individually addressed First-Class letters in one pass — no mail-merge document, no campaign platform. Rows with a repaired ZIP or a missing city are flagged before anything prints, and each letter is tracked on its own afterwards.
A tenant chasing a security deposit
The demand goes Certified with an electronic Return Receipt, which is what makes the statutory clock provable rather than merely started. That receipt records who signed for it and when — the exact record a security-deposit dispute turns on.
An engineer wiring mail into an agent
The agent quotes the letter for free, then calls send and gets back a payment link for a human to approve — it cannot spend on its own. The same path runs end to end in the sandbox, free, with nothing printed.
One price. Postage included.
Printing, the envelope and USPS postage are in the number, no matter which surface you send from.
$0.99
First-Class letter
1 page, black and white, envelope and postage included
Extra pages $0.25 · Color +$0.50/page · Tracking +$0.99
$12.99
Certified Mail
Proof of mailing and USPS tracking
The one landlords, courts and the IRS take seriously
$14.99
Certified + Return Receipt
Adds a signed electronic proof of delivery
The signed delivery record, emailed as a PDF
$24.99
Priority Mail
Flat-rate envelope, 1 to 3 day delivery
For the letter that cannot wait
Full detail on the pricing page.
Send it from your inbox.
Opens your mail app with the recipient, return-address, and letter fields already started.
✓ You approve the exact total✓ No account neededFrom $0.99
Common questions
Is email-to-send live today?
Yes. Forward an email with a recipient and letter text to our inbound address, get a quote, and reply to confirm and send.
Why does the template ask for my own address?
USPS requires a return address on every physical piece it carries. Without one, a letter that can't be delivered has nowhere to go back to. It's not optional, so the template asks for it up front instead of you finding out later.
Do I have to write the letter myself?
No. Write it under SEND EXACTLY: if you already have the words, or under DRAFT FOR ME: if you'd rather describe what you want said and let paperplane draft it. Either way you see the price before anything happens.
Will I get to see the letter before it's sent, or before I'm charged?
You get a price quote back by email before anything is printed, charged, or mailed — nothing goes further until you reply to confirm that specific quote. Today that reply is a price, not a visual preview of the printed page; a rendered draft to look at before confirming is on the roadmap, not shipped yet.
What if I forget the TO: block?
Write the email in your own words. paperplane reads the recipient out of the prose and asks a follow-up if it cannot find an address or the wording is ambiguous.
Can a script send this way?
Yes. The TO: block convention is deterministic and free — no model call — so anything that sends mail to mail@sendpaperplane.com in that exact shape gets instant, unambiguous handling every time.
How does a reply get matched to the right quote?
paperplane reads only what you actually wrote in a reply, above the quoted lines or the "On ... wrote:" header, and a confirming reply only ever completes the single quote it was sent for.
What does it cost?
One all-in price per letter: $0.99 First-Class, $12.99 Certified, $14.99 Certified with the electronic Return Receipt, $24.99 Priority. Extra pages are $0.25 each, color is $0.50 a page, tracking on First-Class is $0.99. No account, no plan.
Other ways to send
We support your method too — web, email, text or the CLI, one all-in price either way.