Mektup for ChatGPT

io.github.weeci/mektup-mcp

Fully-managed email as MCP tools - register domains, real mailboxes, send and receive mail.

client:ChatGPT transport:streamable-http

Install Mektup in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.usemektup.com/mcp

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