Free email tools

Verify an email address, check SPF, DKIM and DMARC, explain SMTP errors and generate SPF and DMARC records. Free, no sign-up, also by API and MCP.

Free, no sign-up

• Free email verifier

  Check whether an email address is valid before you send. Catches typos (gmial.com, hotmail.con), domains that receive no email and disposable inboxes. Free, no sign-up.

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• SPF, DKIM and DMARC checker

  Check your domain's SPF, DKIM, DMARC and MX for free, with a 0 to 100 score, what to fix in plain words and the record ready to copy.

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• SMTP error explainer

  Paste the error or bounce message (550 5.7.1, 5.1.1, 4.2.2, 5.7.515...) and see in plain words what happened, whose problem it is and what to do next.

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• SPF record generator

  Build your domain's SPF record in seconds, with the services that send for it, without going over the 10 lookup limit. Free, right in your browser.

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• DMARC record generator

  Build your domain's DMARC record, from p=none to p=reject, with the report address. Free, right in your browser, with the steps to raise the policy without losing email.

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