Email SPF, DKIM & DMARC DNS Checker
Verify email authentication DNS records to prevent spoofing, enhance deliverability, and ensure Google/Yahoo inbox compliance.
SPF, DKIM & DMARC Checker Interactive Studio
Real-Time Client-Side Engine ActiveLoading interactive tool interface...
Ideal Use Cases & Workflows
Domain administrators setting up transactional emails via SendGrid, Postmark, or AWS SES.
100% Private & Client-Side Execution
This tool runs entirely within your web browser using modern WebAssembly and JavaScript engines. No sensitive customer payloads, tokens, or proprietary schemas are ever sent to or logged on remote servers.
- Zero server-side persistence or storage.
- Instant zero-latency computation without network bottlenecks.
- Compliant with enterprise data privacy standards (GDPR, HIPAA).
Frequently Asked Questions
Why is DMARC mandatory in 2026?
Major email providers like Google and Yahoo reject emails from domains lacking valid SPF/DKIM/DMARC records.
What is the recommended DMARC policy?
Start with 'p=none' for monitoring, then transition to 'p=quarantine' or 'p=reject'.
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