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DMARC & SPF Email Security DNS Inspector

Real-time email authentication and spoofing defense scanner: resolves live DNS records via Cloudflare & Google DNS-over-HTTPS, checks DMARC alignment (p=reject, quarantine, none), verifies SPF mechanism limits (RFC 7208), grades email security (A+ to F), and provides 1-click remediation TXT records.

✓ Live DNS-over-HTTPS resolution via Cloudflare & Google DoH✓ Full DMARC record inspection with policy enforcement grading (p=reject)✓ Sender Policy Framework (SPF) mechanism parser & qualifier check✓ Google & Yahoo 2024 bulk email sender deliverability compliance check✓ Instant copyable hardening DMARC TXT record generator
Free In-Browser Utility · 100% Client-Side & Zero Data Telemetry
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