Free tool · no signup
Enter any email and we'll SMTP-check it live against the destination mail server. No account, no card, no waitlist. 25 free checks per day per IP address. Sign up if you need more.
Not a pattern match. We connect to the mail server and issue a RCPT TO — the same probe your sender would use.
Accept-all domains get flagged catch_all, not silently marked verified. You know what you're sending to.
A 0-1 confidence value alongside the status, based on the MX provider and the response code. Not a fake green check.
Need more than 25 per day? Start free with 50 credits — after that, $50/mo base + $0.0012 per successful verify. Charge-on-success, no per-tier games.