Resent for ChatGPT

io.github.resentmail/resent

Transactional email for AI agents: templates, domain verify, and sends.

client:ChatGPT transport:streamable-http

Install Resent in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://resent.one/api/v1/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs