Text → letter
Text paperplane’s iMessage number and it’ll turn the conversation into a letter order. Two ways to give it the recipient and the letter:
Just say what you want mailed, in plain language:
paperplane asks whatever it’s missing (an address, the actual wording), quotes a price, and sends only after you reply with an explicit yes.
Or use the structured fallback — the same TO: block convention as send by email, or a native iMessage Contact card:
Share a Contact card instead of typing the address and paperplane reads the name and postal address straight off it.
What happens
- A natural-language message goes through an AI read that asks clarifying questions and can call the same
quote_letter / send_letter tools MCP agents use — the TO: block and Contact-card formats skip straight to deterministic parsing. Either way lands on the same recipient + letter text.
- We verify the address, quote a price, and reply with the total.
- Nothing is mailed until you reply with an explicit yes-style confirmation to that specific quote. A
send_letter call is never executed as an actual send in the same turn it’s decided on — only a later, explicit confirmation against an already-priced quote spends it.
- We create the order and reply with the tracking link.
Notes
- The recipient must be a real USPS-verifiable address, same as every other surface.
- Like email, a message with nothing that resolves to an address gets a question back, not a guess.
- A “yes” only ever confirms the specific quote it was minted for — the recipient, letter content, and price are bound to a single-use token, the same mechanism
send_letter uses everywhere else.
- Test mode: use sandbox-mode orders to test the full flow for free before sending real mail.
Last modified on September 16, 2026
