Physical mail API for AI agents. Send letters, certified mail, postcards from code via MCP.

Hosted
Streamable HTTPofficialservice

Deployment

Hosted
streamable-httphttps://mailbox.bot/api/mcp
Headers
AuthorizationRequired
Bearer token. Use an agent key (sk_agent_...) for autonomous agents, or a member key (sk_live_...) for personal use. Mint keys at https://mailbox.bot/mcp-install.