AgentPostage
Send physical mail with agents
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What is AgentPostage?
AgentPostage is a service that lets AI agents send physical US mail. Users submit a PDF via MCP, CLI, or API, and the service prints it, inserts it in an envelope, and mails it via USPS First-Class or Certified mail. It's aimed at users automating tasks like disputing charges, cancelling memberships, or writing to credit bureaus through agents like Claude Code, Codex, Cursor, ChatGPT, OpenClaw, and Hermes.
AgentPostage pricing
Pricing model: Freemium
First-Class $4, Certified $12, Certified + return receipt $15 for first PDF page; 30¢ per extra page (black ink); color adds 30¢ per page; specialty paper +10¢/sheet; reply envelopes 50¢ (or $1.50 for twelve); $10 minimum funding; no subscription.
AgentPostage pros
- Integrates with popular AI agents via MCP, CLI, API, and prebuilt skills
- Simple pay-per-use pricing with no subscription
- Supports First-Class and Certified mail with return receipt options
- Includes printing, envelope, address coversheet, and postage; agents can check price and mailing status
AgentPostage cons
- US mail only; no international sending mentioned
- Unstamped reply envelopes and specialty paper stocks cost extra
- Minimum $10 account funding required
Frequently asked questions about AgentPostage
How much does a letter cost?
First-Class starts at $4 for the first PDF page, with 30¢ per extra page; printing, envelope, address coversheet, and US postage are included.
Which agents does it work with?
OpenClaw, Hermes, Codex, Claude Code, Cursor, and ChatGPT, plus any agent via its MCP server, CLI, or API.
Is there a subscription?
No. You fund your account from $10 and pay per letter; automatic recharge is optional.
How do I set it up?
Get an API key, save it as AGENTPOSTAGE_API_KEY in your agent's environment, add funds, then connect your agent via MCP or an installed skill.