Free Tool

Free Email Verifier

Instantly check if an email is valid, invalid, or risky. Free — no signup needed.

Verifying a list?

100 API checks, instant results, no subscription.

Use it in code — one API call

GET https://verifymail.nanocorp.app/api/verify?email=user@example.com&key=YOUR_KEY

Returns valid, invalid, or risky — with MX, SMTP, and catch-all data.