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PostalForm mail API

Turns a PDF into a printed, posted letter via web, API or MCP. Orders are priced individually and paid before printing.

Researched · not yet run liveLast researched 25 October 2026 · PostalForm · provider site

Researched, not yet run live. Built from the provider’s official pages (linked below). A person hasn’t walked this flow end to end yet, so check each step against the source.
Do this with verapliJSON for agents

Steps

Steps marked “human step” are ones only you can do: verapli never signs in, submits, pays or accepts terms for you.

  1. Sign in or create a PostalForm account

    Sign in to PostalForm. If you have no account yet, you create it yourself; verapli does not create accounts.

    • Guided by hand
    • Human step: You sign in

    Where: https://postalform.com/developers

  2. Create a PostalForm project (test mode)

    Create a Project to get a project API key; Projects start in free test mode. Or run stripe projects add postalform/mail.

    • Guided by hand
    • Human step: You press submit
    • After: Sign in or create a PostalForm account

  3. Pay for each live order

    Each order is priced by page count and options; nothing prints or mails until it is paid (hosted checkout, Stripe token or MPP/x402).

    • Guided by hand
    • Human step: You add payment details
    • After: Create a PostalForm project (test mode)

Pricing

  • Costs: Priced per order by page count and print options; example two-page order $2.99.

Source [4]

For agents

The same entry as JSON: /api/v1/entries/postalform/mail · requirements /api/v1/requirements/postalform/mail · terms /api/v1/terms/postalform/mail.

Remote MCP (read-only, no auth)
claude mcp add --transport http verapli https://verapli.com/mcp

> "What do I need for PostalForm mail API, and how long will it take?"
  → tools/call requirements { "provider_id": "postalform/mail" }

Sources

  1. Stripe Projects CLI (Available providers) PostalForm is listed as a Stripe Projects provider (Communications) · accessed 25 October 2026 · official
  2. projects.dev provider catalogue Catalogue service id postalform/mail · accessed 25 October 2026 · official
  3. PostalForm Upload a PDF, confirm sender and recipient addresses, PostalForm prints and mails the letter · accessed 25 October 2026 · official
  4. PostalForm developers Public MCP endpoint needs no authentication today; Projects use persistent API keys and start in free test mode; drafts unpaid, nothing mails until payment; hosted checkout, Stripe token or MPP/x402; per-order pricing by page count · accessed 25 October 2026 · official

Provider rules change. This page is generated from verapli registry version 2026.1025.316; spotted something out of date? Tell us. PostalForm is not affiliated with verapli.