How to use Bulk Email Validator Free
- Give Bulk Email Validator Free an email address or domain to work with.
- Run it, and Bulk Email Validator Free issues the DNS lookups directly from your browser.
- See the response from a public DNS resolver; Bulk Email Validator Free only displays what comes back.
About this tool
Bulk Email Validator Free runs as a page in your browser. Bulk Email Validator Free validates an address syntax locally, then checks the domain MX, SPF and DMARC records over DNS-over-HTTPS.
Proving a specific mailbox exists requires sending mail, which a browser cannot do, so Bulk Email Validator Free focuses on the DNS signals that genuinely can be checked. 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 Bulk Email Validator Free?
Bulk Email Validator Free validates the address format and checks the domain's MX, SPF and DMARC records via DNS from your browser.
Does Bulk Email Validator Free cost anything?
No — Bulk Email Validator Free is completely free, with no sign-up and no hidden limits.
Where does Bulk Email Validator Free run its checks?
Bulk Email Validator Free 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 Bulk Email Validator Free confirm a mailbox really exists?
Bulk Email Validator Free 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.