DMARC Builder & Checker

Build and validate DMARC policies for email authentication

Policy (p=)

Subdomain Policy (sp=)

Percentage (pct=)

% of messages to apply policy to. Use for gradual rollout.

Aggregate Reports (rua=)

Forensic Reports (ruf=)

SPF Alignment (aspf=)

DKIM Alignment (adkim=)

Add as TXT record for _dmarc.yourdomain.com

v=DMARC1; p=none