Domain Email Auth Checker
Check public email authentication evidence for a domain, including MX, SPF, DKIM, and DMARC. Use the browser-only header check to compare DNS findings with a real sent message.
Tools
Tools
Small tools for checking email authentication, reviewing deliverability evidence, and making technical email setup easier to review and explain.
Built with a privacy-first approach. No analytics, tracking, or storage unless a specific tool clearly says otherwise.
Available tools
More tools coming soon
Future tools may cover email QA, deliverability review, lifecycle reporting checks, and email infrastructure learning.