Send certified mail from Claude.
Hand your assistant a PDF. It prints and mails it by USPS Certified Mail, or faxes it, and hands back the tracking number and the receipt.
Pay per piece from a prepaid balance. No subscription.
send_letter → ACCEPTED
service Certified Mail + e-receipt
pages 3 (your PDF from the chat)
tracking 9407 1118 9876 5432 1098 76
mails by next business day
charged $13.95 from balance
Built for the way assistants actually work
- Real file uploadSend the PDF you have in the chat. No hosting it at a public link first.
- Prepaid balanceYour assistant can't type a card number, and shouldn't. Top up once; each send draws from the balance, with a spending cap you set.
- Preview, then approveEvery send shows a proof, the address and the price first. Nothing prints until you say yes.
- Proof comes back to the chatTracking number, fax confirmation and the return receipt when it's signed, ready to file.
Price
| First-Class letter, up to 5 pages | $2.50 |
| USPS Certified Mail with electronic return receipt | $13.95 |
| Fax, sent or received | $0.25 / page |
| Monthly fee | $0 |
Questions
Which assistants does it work with?
Any client that supports remote MCP connectors, including Claude, Claude Code and ChatGPT.
What do people send?
Landlord notices, demand letters, billing disputes, cancellation letters, records requests, and anything else where you need to show it was sent and received.
Can my assistant send without asking me?
Not by default. Each send needs your approval unless you set a rule that allows it, and a monthly cap limits the total either way.
New to certified mail? Read what Certified Mail and a return receipt each prove.