Security tools

Email Security Checker

Validate SPF, DKIM, and DMARC DNS records for a domain.

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Enter a domain to check SPF, DKIM, and DMARC records.

Validate SPF, DKIM, and DMARC records for a domain

The email security checker inspects SPF, DKIM, and DMARC DNS records to help identify missing or weak email authentication. Use it before changing mail providers, launching domains, or investigating spoofing and deliverability issues.

The summary highlights practical DNS findings so you can decide whether to update TXT records, add selectors, or tighten policy over time.