ChatGPT Multi Mail Prompt/needs_reply
How to: ChatGPT Multi Mail needs_reply
Add Multi Mail to ChatGPT
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01
Open Settings → Connectors → Advanced → Developer mode and merge this in. Keep any servers already there.
https://mail.lumman.co/mcp-
02
Save the file and restart ChatGPT.
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03
needs_reply is surfaced in the connector's menu once the server is linked. Unlike a tool, you invoke it deliberately — ChatGPT will not call it for you.
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04
If it does not appear, check that Multi Mail is connected and that you are looking at its prompts rather than its tools.
Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs
Same prompt, other clients
Read from the server itself, by connecting to it and calling prompts/list on 11 October 2026.
A listing does not declare its prompts, so asking is the only way to know them, and this
is what the server actually offers rather than what its listing claims. Names only are
stored; connect the server for each prompt's arguments.