Free Tools
Useful diagnostics. No account required.
Nine focused diagnostic utilities are planned for release. Each will link to its own dedicated page once its logic, abuse controls, and privacy behavior are complete.
DNS Records Viewer
Inspect messaging-relevant DNS records in one place.
Open tool →DMARC Policy Maturity
Evaluate DMARC posture from monitoring through enforcement.
Open tool →SPF Lookup / Flattening Risk
Inspect SPF depth, DNS lookup count and flattening pressure.
Open tool →DKIM Selector Checker
Validate a selector and inspect the published DKIM key.
Open tool →MTA-STS / TLS-RPT Checker
Validate transport-security policy and reporting records.
Open tool →Domain Email Trust Check
Domain posture across SPF, DKIM, DMARC and related trust signals.
Open tool →Email Header Analyzer
Trace hops, delay, authentication outcomes and suspicious header patterns.
Open tool →Message Origin Analyzer
Correlate identity, routing, authentication and ARC evidence already in the headers.
Open tool →IP Blocklist Check
Check whether an IP or host appears on selected common blocklists.
Open tool →