Email Security Tools

Build a correct SPF TXT record in your browser. Provider presets, a live DNS lookup counter for the RFC 7208 10-lookup limit, and honest ~all vs -all advice.

Generate a correct DMARC TXT record in your browser: plain-English policy levels, staged rollout presets from monitoring to reject, and warnings when you skip reporting.

Check SPF, DKIM, DMARC and BIMI records for any domain. Per-pillar parser, 12 common DKIM selectors probed, posture score and prioritised fix list. Runs via DNS-over-HTTPS in your browser.

Email DNS Health Checker: MX, SPF, DMARC and Mail Security Audit"Our emails keep landing in spam." I hear that constantly, and it always ends with me poking at the same...

DKIM Lookup Tool: Check DKIM Selector and Public Key RecordHand me a domain and a selector. I'll pull the DKIM record. The catch with DKIM is the record hides under...

DMARC Record Checker: Policy, Alignment and Reporting AnalysisType a domain. I'll pull its DMARC record and read it back to you in plain terms: what the policy is set to,...

SPF Record Checker: Analyze SPF TXT Records, Includes and PolicyType a domain. You'll see its SPF record and which servers it lets send mail. The tool pulls apart the mechanisms,...

Email & DNS Security Tools: SPF, DMARC, DKIM and Mail DiagnosticsMail is still where most attacks start. And the records that protect it? They live in DNS, where nobody looks...