Free Email Security Tools
Validate your email authentication setup with our free tools. Check DNS records, diagnose configuration issues, and test your deliverability.
Email Investigation
NewSend a test email and get a comprehensive deliverability report. Checks SPF, DKIM, DMARC, ARC, reverse DNS, and more — with an overall score and actionable recommendations.
DNS Record Checkers
SPF Record Checker
Validate your SPF record syntax, check DNS lookup limits, and identify authorized sending servers.
Check SPF →DKIM Record Checker
Look up your DKIM public key record, verify its configuration, and check key strength.
Check DKIM →DMARC Record Checker
Analyze your DMARC policy, check alignment settings, and review reporting configuration.
Check DMARC →Want continuous monitoring?
These tools give you a point-in-time snapshot. SenderClarity monitors your domains 24/7 with alerts, trend analysis, and plain-English guidance to keep your email authentication healthy.