mailverdict for ChatGPT

dev.mailverdict/mailverdict

Keyless email checks: disposable, role, and free-provider detection, MX, and typo suggestions.

client:ChatGPT transport:streamable-http tools:2

Install mailverdict in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.mailverdict.dev/mcp

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