GhosterMail for ChatGPT

com.ghostermail/ghostermail

Create private and temporary mailboxes, send e-mails and read incoming messages and codes.

client:ChatGPT transport:streamable-http

Install GhosterMail in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.ghostermail.com/mcp

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