Lumail for ChatGPT

io.github.melvynx/lumail

Official Lumail email marketing MCP for campaigns, subscribers, and workflows.

client:ChatGPT transport:streamable-http

Install Lumail in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://lumail.io/mcp

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