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DMARC, SPF and DKIM checker

DMARC, SPF and DKIM checker for your domain

A broken SPF include or a DKIM key rotated by your email provider sends your invoices and password resets to spam, and nothing tells you. Full Stack Audit checks your domain's email authentication records on a schedule and emails you when one breaks.

Or run a free quick check first, no account needed

What a result looks like

DMARC policyWarning

p=none — reports only, spoofed mail is still delivered

SPF recordFailed

Too many DNS lookups (12 of 10)

DKIMPassed

Valid 2048-bit key for selector google

Run these checks on your site

Free during early access. Each audit also runs the other 121 checks across security, SEO, performance and email.