Free email tools

Check an address, look up a domain's mail servers, and test the SPF, DKIM and DMARC records that decide whether your mail reaches the inbox. No signup.

• Email checker

  Check whether an email address is real. Free, no signup: format, mail server, disposable and role-account checks with a typo suggestion.

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• Disposable email checker

  Find out if an email address belongs to a disposable or temporary mail service. Free, instant, checked against 120,000+ throwaway domains.

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• MX lookup

  Look up the MX records for any domain. See mail servers in priority order, their IP addresses, the mail provider, and any problems.

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• SPF checker

  Check a domain's SPF record. Counts DNS lookups against the limit of 10, finds duplicate records, and explains what to fix.

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• DMARC checker

  Check a domain's DMARC record: policy strength, reporting address, percentage and inheritance, with plain-language advice.

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• DKIM checker

  Look up a DKIM record by selector, check the key size and spot revoked, truncated or test-mode keys. No selector? We try the common ones.

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• Cold email checker

  Paste a cold email and check it for spam triggers, unfilled merge tags, risky links and missing opt-outs. Free, no signup.

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• Email header analyzer

  Paste an email's raw headers to see where it came from, whether SPF, DKIM and DMARC passed, and where it was delayed. Runs in your browser; nothing is uploaded.

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