mailbox-mcp

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

#2927 by GitHub starsChecked 2026-11-02

What it connects

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

Registry listing — description sourced from the publisher's entry in an awesome-list. Setup, compatibility and requirements are not verified; see the repository.

Source: https://github.com/arbengine/mailbox-mcp · ★ 2 on the source repo

Setup instructions and compatibility are compiled from publisher docs and community reports, not hands-on testing, unless a step is marked Tested. Check the source before relying on a setup.