Email Address Validator
Checks format, looks up the domain's live MX records over DNS-over-HTTPS, and flags disposable domains and role accounts. The address itself never leaves your browser — only a DNS query for the domain is made.
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Honest note: confirming a specific mailbox exists requires an SMTP handshake from a mail server — no browser tool can do that. This checks syntax, live DNS, and known-bad-domain heuristics, which catches most dead addresses before you send.
About this tool
Runs the four checks that catch the bulk of bad addresses before they bounce and hurt your sender reputation: RFC-style syntax validation, a live MX lookup against Cloudflare's DNS-over-HTTPS resolver (a domain with no mail exchanger can't receive email, full stop), a list of ~40 known disposable-email providers, and role-account detection — info@, sales@ and friends, which real people rarely read and list-hygiene tools routinely flag. What it deliberately does not claim: mailbox-level verification. That needs a server-side SMTP conversation, and any browser tool telling you otherwise is guessing.
Privacy: the address you type is processed entirely in your browser. The only network request is a standard DNS query for the domain part (e.g. “acme.com MX”) sent to cloudflare-dns.com — the local part of the address is never transmitted, stored, or logged by this site.