mailopoly for ChatGPT

com.mailopoly/mailopoly

Your unified inbox — everything that reaches you, understood and actionable from your AI assistant.

client:ChatGPT transport:streamable-http

Install mailopoly in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://fastapi.prod.aws.mailopoly.com/mcp-server

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