All Tools
Free SPF DKIM DMARC Checker
Check your email security records and get recommendations to prevent spoofing and improve deliverability
SPF
Specify which servers are authorized to send emails on behalf of your domain.
DKIM
Add digital signatures to emails, proving they haven't been tampered with.
DMARC
Tell receiving servers how to handle emails that fail SPF/DKIM checks.
DNSSEC
Protect against DNS spoofing with cryptographic authentication.
Frequently Asked Questions
SPF (Sender Policy Framework) is a DNS record that specifies which mail servers are authorized to send email for your domain. Without SPF, spammers can forge emails appearing to come from your domain. Add an SPF record like "v=spf1 include:_spf.google.com ~all" to your DNS.