What it does

Physical mail API for AI agents: send letters, certified mail, postcards and batch mailings with cost previews, approval controls, tracking and webhooks.

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Connection manifest

Public connection metadata from the source. Follow the provider’s setup guide for authentication, permissions, and required variables.

{
  "name": "arbengine/mailbox-mcp",
  "repository": {
    "url": "https://github.com/arbengine/mailbox-mcp"
  },
  "remotes": [],
  "packages": []
}

Metadata reviewed for listing. Server code, permissions, and runtime behavior have not been security-audited. Directory access is free; individual providers may charge.