Free email authentication check
Check SPF, DKIM, DMARC before your next send
Enter your domain to see whether your email authentication records are ready for inbox placement. You’ll get a pass/fail report, detected DNS records, and the exact record templates to publish next.
Spot missing or duplicated SPF records on the root domain
Detect common DKIM selectors and retry with your provider’s selector when needed
Check DMARC policy strength so you can move from monitoring to enforcement
Get copy-ready DNS record templates to fix your authentication instantly
Domain audit
Enter your domain to check
What this checks
This tool checks DNS-level authentication only. It does not measure sender reputation, mailbox placement, blocklists, or content quality. You’ll get individual SPF, DKIM, DMARC results, plus recommended DNS entries you can copy into your DNS provider.