MX Lookup
Look up the live MX (mail exchanger) records for any domain, sorted by priority. See exactly which servers accept mail for a domain — the first thing every email verifier checks before it sends a single probe.
The first thing every verifier checks.
MX (Mail eXchanger) records tell the world which servers accept mail for a domain. No MX means the domain can't receive email at all — an instant invalid.
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We query live DNS
Enter a domain and we resolve its MX records straight from public DNS — the same lookup a sending mail server performs.
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Sorted by priority
Lower priority numbers are preferred. We sort them so you can see exactly which server mail hits first and what the fallbacks are.
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Read the provider
The hostnames reveal the mail provider — google.com, outlook.com, a spam filter, or a self-hosted server — useful context for deliverability.
MX records, answered.
Related free tools.
MX checks out — but does the mailbox?
MX is step one of twenty. EmailListChecker adds SMTP, catch-all, disposable and trap detection for a real verdict. Try it free.