Free Email Security Tools
Seven targeted checks for your domain — no account, no email required. Results are instant and run directly against live DNS.
SPF Record Checker
Validate your Sender Policy Framework record. Checks mechanisms, DNS lookup counts, and the all mechanism enforcement level.
- Record syntax
- DNS lookup count (10 max)
- Mechanism analysis
- Multiple record detection
DKIM Validator
Probe 22+ common DKIM selectors to find and validate your signing keys. Automatically detects your mail provider.
- 22+ selector probing
- Provider auto-detection
- Key revocation check
- Test mode detection
DMARC Scorer
Analyse your DMARC policy, enforcement percentage, alignment settings, and aggregate/forensic reporting configuration.
- Policy level (none/quarantine/reject)
- Enforcement percentage
- Alignment settings
- Reporting URIs
MTA-STS + TLS-RPT Checker
Check your MTA-STS DNS record and policy file, validate MX host entries, and verify TLS-RPT reporting is configured.
- DNS record detection
- Policy file reachability
- MX validation
- TLS-RPT check
Blacklist Checker
Resolve your domain to IPs, check all mail server IPs against 12 DNS-based blacklists including Spamhaus, Barracuda, and SpamCop.
- 12 DNSBL zones
- Domain + IP checks
- Severity classification
- Delisting guidance
Email Security Score
Run all 5 checks simultaneously and receive a single 0–100 score with a letter grade (A–F) for your domain.
- All 5 checks in parallel
- Weighted 100-point score
- Letter grade (A–F)
- Prioritised findings
Email Header Analyzer
Paste raw email headers to trace the full delivery path, detect spoofing indicators, and verify SPF, DKIM, DMARC, and ARC authentication results.
- Hop-by-hop routing trace
- SPF/DKIM/DMARC/ARC auth
- Spoofing & anomaly flags
- Transit time analysis