DMARC Defender

Free tool to scan a domain for DMARC, SPF, DKIM, MX, BIMI, and other email security records and flag issues

Web appmvpfreeglobal

A free web tool that scans a domain's public DNS for DMARC, SPF, DKIM, MX, BIMI, TLS-RPT, and MTA-STS records and evaluates syntax, policy strength, and missing protections. It highlights failures that commonly block DMARC enforcement and harm email deliverability, helping IT and email administrators, domain owners, and security or deliverability teams find issues to fix.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of DMARC Defender - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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Describe what is not working - we’ll show you whether DMARC Defender (or something else) actually fits.

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