Free, privacy-first checker for SPF, DKIM, and DMARC records
Email authentication is your first line of defense against cyber threats. Our comprehensive security checker analyzes three critical email security protocols that work together to protect your business communications.
Prevents email spoofing by verifying sender IP addresses
Adds digital signatures to prove email authenticity
Tells receivers how to handle suspicious emails
Sender Policy Framework prevents email spoofing by specifying which servers can send mail for your domain
DomainKeys Identified Mail adds cryptographic signatures to verify email authenticity
Domain-based Message Authentication tells receivers what to do with emails that fail SPF or DKIM
All DNS queries are performed client-side using Cloudflare's DNS-over-HTTPS. No data is collected, stored, or shared. Your domain information never touches our servers.
Now that you understand your email security status, discover what else you can do to protect your business.
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