communication
Resend
Resend — the full non-OAuth API: transactional & marketing email; emails, domains & API keys; marketing lists (audiences, contacts, segments, broadcasts); templates, webhooks & topics; and automations, events, contact-properties & logs (Phases 1–5, 85 tools). Bearer API key.
What it does with Protobox
Connect Resend once and its 85 tools become available to every agent talking to your MCP server: no separate integration code per client.
Works with
Claude, Cursor, ChatGPT, and any MCP-compatible client