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Inspect
Inspect
Check a domain, a DKIM key, an SPF chain or a single email header, and see exactly what is wrong.
6 articles
DNS History: see what your records looked like before
A timeline of every DMARC and SPF record change DMARCS has seen for a domain, with the full record value at each point, for working out what broke and when.
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Domain Health: send a real test email
Prove your SPF, DKIM and DMARC actually work by sending one email to check@dmarcs.com and reading back what a real receiving server saw.
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DNS Inspector: check every email record at once
Enter a domain and get found or missing for DMARC, SPF, MX, MTA-STS and TLS reporting in one pass, with the raw record shown wherever one exists.
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DKIM Inspector: track every DKIM key you publish
Every DKIM selector on your domain with its key strength and live status, plus a DNS scan that finds selectors you didn't know were published.
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SPF Surveyor: see your whole SPF chain as a tree
Draws your SPF record as a tree, following every include and redirect and labelling Google, Microsoft 365, Salesforce and other vendors.
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Header Analyzer: find out where an email really came from
Paste the raw headers of any email and get a plain-language verdict on who sent it, the path it took, and whether SPF, DKIM, DMARC and ARC passed.
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