Postfleet for ChatGPT

ai.postfleet/postfleet

Give an AI agent its own email address: send, reply, read, and wait for mail.

client:ChatGPT transport:streamable-http runtime:npm

Install Postfleet in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.postfleet.ai/api/mcp

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