Email Security Grader
Instantly grade your domain's SPF & DMARC configuration and find gaps in your email security.
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What is SPF?
SPF defines which mail servers are allowed to send email on behalf of your domain, preventing spoofing.
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What is DMARC?
DMARC tells receiving mail servers what to do when SPF or DKIM checks fail — reject, quarantine, or do nothing.
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What is an A grade?
A grade means your domain has both strict SPF (-all) and a DMARC policy of p=reject.