Proxy Mail QA for ChatGPT
qa.proxymail/proxymail-qa
Test inboxes for your app's sign-up and login emails: get the code or link, or why none came.
client:ChatGPT
transport:streamable-http
Install Proxy Mail QA in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://api.proxymail.qa/mcp
Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs