MailValid Email Verification for ChatGPT

io.mailvalid/email-verifier

Verify emails: syntax, MX, SMTP mailbox, disposable, role and catch-all checks. Single and bulk.

client:ChatGPT transport:streamable-http tools:6

Install MailValid Email Verification in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mailvalid.io/mcp/

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