Email Validator
Clean up email lists: catch typos, invalid addresses and throwaway domains.
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● Addresses are checked in your browser. With the MX option, only the domain names (not the addresses) are sent to Cloudflare's public DNS.
How it works
Syntax is checked against the practical subset of RFC 5321/5322 accepted by real mail servers. The tool also suggests fixes for frequent typos in popular domains, flags disposable (throwaway) providers and role addresses like info@ or admin@, and can look up the domain's MX records over DNS-over-HTTPS. It can't tell whether a specific mailbox exists — only sending an email can.