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Email & DNS Security

Check Domain SPF, DKIM, DMARC & BIMI

Analyze email authentication settings for any domain in seconds. Detect security flaws before your emails land in spam.

Common DKIM Selectors: default, google, mail, s1, s2, dkim

SPF, DKIM, DMARC & BIMI explained in 30 seconds

SPF Sender Policy Framework

Specifies which mail servers are authorized to send email from your domain.

DKIM DomainKeys Identified Mail

Cryptographic signature verifying that email was not altered in transit.

DMARC Domain-based Message Authentication

Instructs receiving servers what action to take if SPF or DKIM checks fail.

BIMI Brand Indicators for Message Identification

Displays your brand logo in inboxes like Gmail and Outlook.