How to use Email Verifier Tool
- Start by entering an email address or domain in Email Verifier Tool.
- Run it, and Email Verifier Tool issues the DNS lookups directly from your browser.
- Review the result, which Email Verifier Tool fetches live from a public DNS resolver.
About this tool
Email Verifier Tool runs in your browser with no backend of its own. Email Verifier Tool validates an address syntax locally, then checks the domain MX, SPF and DMARC records over DNS-over-HTTPS.
The MX, SPF and DMARC lookups are real DNS-over-HTTPS queries, not guesses. The MX, SPF and DMARC checks are DNS queries sent from your browser to a public resolver; this site has no backend and never sees them, and a connection is required.
Frequently asked questions
How do I use Email Verifier Tool?
Email Verifier Tool validates the address format and checks the domain's MX, SPF and DMARC records via DNS from your browser.
Does Email Verifier Tool cost anything?
No — Email Verifier Tool is completely free, with no sign-up and no hidden limits.
Where does Email Verifier Tool run its checks?
Email Verifier Tool runs DNS lookups (MX, SPF, DMARC) from your browser against a public DNS-over-HTTPS resolver. This site has no backend and never sees them; the public resolver does.
Can Email Verifier Tool confirm a mailbox really exists?
Email Verifier Tool checks address syntax and the domain's MX, SPF and DMARC via DNS-over-HTTPS; proving a live mailbox needs to send mail, which a browser cannot do.