Listed app in the Make directory

Send mail from Make

paperplane is a listed Make app: add the “Send a Letter” module to any scenario and real USPS mail goes out from $0.99 per letter — typed fields, no JSON, free sandbox included.

From $0.99 · postage included · no account needed

Under the hood: the request the module sendsExample

{
  "mail_class": "first_class",
  "sandbox": true,
  "text": "Dear Ms. Alvarez, ...",
  "to":   { "name": "Maria Alvarez", "line1": "1 Main St",
            "city": "Richmond", "state": "VA", "zip": "23220" },
  "from": { "name": "Alex Rivera", "line1": "12 Grove Ave",

paperplane · Make

Mail this deliverable to the client, certified.

Here’s the draft. I’ll get a quote before anything is sent.

Total, postage included$12.99

Sandbox free · holds 30 minApprove to send

Nothing prints until you approve. Order ord_8k2d.

Instead of Make's HTTP module against a mail API

A raw HTTP module works, but you build the JSON, store a key and parse errors by hand. The listed module has typed fields, Sandbox as a switch and the returned payment_url as an output.

How it works

Set up Make in three steps.

Listed app in the Make directory

Step 01
Add the module
Search “paperplane” when adding a module and choose Send a Letter.
Step 02
Map scenario variables
Fill the typed fields — letter text or PDF URL, recipient, return address, receipt email.
Step 03
Sandbox, then go live
Run once with Sandbox on (free, instant), then turn it off. Pay from a prepaid balance or handle the returned payment_url.

Copy the config.

Under the hood: the request the module sends

{
  "mail_class": "first_class",
  "sandbox": true,
  "text": "Dear Ms. Alvarez, ...",
  "to":   { "name": "Maria Alvarez", "line1": "1 Main St",
            "city": "Richmond", "state": "VA", "zip": "23220" },
  "from": { "name": "Alex Rivera", "line1": "12 Grove Ave",
            "city": "Richmond", "state": "VA", "zip": "23221" },
  "email": "alex@example.com"
}

Same call as curl (for testing)

curl -X POST https://sendpaperplane.com/v1/orders \
  -H 'Content-Type: application/json' \
  -d '{
    "mail_class": "first_class",
    "sandbox": true,
    "text": "Dear Ms. Alvarez, ...",
    "to":   { "name": "Maria Alvarez", "line1": "1 Main St",
              "city": "Richmond", "state": "VA", "zip": "23220" },
    "from": { "name": "Alex Rivera", "line1": "12 Grove Ave",
              "city": "Richmond", "state": "VA", "zip": "23221" },
    "email": "alex@example.com"
  }'

Under the hood

The Make app is typed modules over our public REST API. The generic HTTP module against POST /v1/orders remains fully supported for anything the app doesn’t cover.

Supported action fields

Every integration maps into the same fixed set of fields, the ones the REST API and MCP tools take directly.

Field	What it does
mail_class	first_class, certified, certified_err (Certified with electronic Return Receipt), or priority
text or pdf_url	the letter body as plain text, or a fetchable PDF to print as-is
to	recipient name + street/city/state/zip, verified against USPS data
from	return address, printed on the envelope and used for undeliverable mail
email	where the receipt and status updates go — no account required

Or skip the automation tool: ask Claude or ChatGPT

Every integration here sits on the same MCP endpoint agents use directly. Instead of wiring a trigger to an action, ask Claude or ChatGPT to draft and mail the letter. Same mailing tools (quote_letter, send_letter, get_letter_status), same price, same free sandbox.

Send mail from Claude Send mail from ChatGPT

Send your first letter from Make.

Sandbox runs the whole pipeline for free and mails nothing. Live sends start at $0.99, one all-in price.

Send a letter

curl -X POST https://sendpaperplane.com/v1/orders \
  -H 'Content-Type: application/json' \
  -d '{
    "mail_class": "first_class",
    "sandbox": true,
    "text": "Dear Ms. Alvarez, ...",
    "to":   { "name": "Maria Alvarez", "line1": "1 Main St",
              "city": "Richmond", "state": "VA", "zip": "23220" },
    "from": { "name": "Alex Rivera", "line1": "12 Grove Ave",
              "city": "Richmond", "state": "VA", "zip": "23221" },
    "email": "alex@example.com"
  }'

Common questions

How do I test without spending money?

Enable Sandbox on the module — rendering, screening, and simulated fulfillment run instantly and free, and nothing is printed or mailed.

Can a scenario send Certified Mail?

Yes — set the mail class field to Certified (or Certified + Return Receipt for electronic proof of delivery). The response carries the exact all-in total.

Do I need an API key?

No — each order carries its own payment via credit balance or a paperplane payment link, and sandbox needs nothing.