How to use Bulk Email Verifier
- Enter an email address or domain into Bulk Email Verifier.
- Press the button and Bulk Email Verifier sends the DNS lookups from your browser.
- See the response from a public DNS resolver; Bulk Email Verifier only displays what comes back.
About this tool
Bulk Email Verifier runs as a page in your browser. Bulk Email Verifier inspects the DNS-level deliverability signals for a domain directly from your browser.
Proving a specific mailbox exists requires sending mail, which a browser cannot do, so Bulk Email Verifier 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
What does Bulk Email Verifier do?
Bulk Email Verifier validates the address format and checks the domain's MX, SPF and DMARC records via DNS from your browser.
Does Bulk Email Verifier cost anything?
No — Bulk Email Verifier is completely free, with no sign-up and no hidden limits.
Where does Bulk Email Verifier run its checks?
Bulk Email Verifier 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 Verifier confirm a mailbox really exists?
Bulk Email Verifier 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.