MailTested

What it does

MailTested helps you understand why your emails go to spam. It runs SPF, DKIM, DMARC, and blacklist checks, analyzes content and headers, and gives you a detailed deliverability score. No sign-up limits, no fluff — just send a test email and see what’s broken before your customers do. Perfect for sysadmins, marketers, and SaaS teams who care about inbox placement.

Send one email to run a free email spam checker and deliverability test covering SPF, DKIM, DMARC, blacklists, reverse DNS, and SpamAssassin.

Send one email to check SPF , DKIM , DMARC , blacklists, reverse DNS, and SpamAssassin — with a clear score out of 10. Use the sender address you want to test (e.g. [email protected] ). After you send your email, open the diagnostic report to see your score, failed checks, and recommended fixes. Important: this is a technical spam-risk test, not a seed-list test inside Gmail or Outlook. No automated score can guarantee inbox placement. Confirm the sending server is authorized and the message signature validates. See whether the authenticated identities align with the visible From domain. Validate PTR, forward lookup, and HELO hostname consistency. Review the spam score, threshold, and…from mailtested.com

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