Free Tool
Free SPF, DKIM, DMARC Checker
Email authentication is the first layer of deliverability and anti-spoofing defense. This tool gives a practical pass/fail snapshot.
- No login required
- Lightweight diagnostics
- Hosting-aware checks
SPF, DKIM, DMARC Checker
Validate core email authentication records and identify policy gaps that can hurt inbox placement and brand trust.
Enter a value and run your check.
How It Works
Designed for fast diagnostics with lightweight, server-side checks.
- 01
Enter your domain and run the scan.
- 02
We detect SPF and DMARC at standard locations.
- 03
We probe common DKIM selectors and report what is found.
Frequently Asked Questions
Quick answers for common checks and interpretation questions.
Why might DKIM show missing even when it is configured?
Some providers use custom selectors. This checker tests common selectors and reports if none are detected.
What DMARC policy is best?
Most organizations progress from p=none to p=quarantine and then p=reject after monitoring.