SPF
Declares which servers may send on behalf of your domain — forgeries are blocked.
Free tool · Domain & email health checker
Email deliverability & health checker
Inspect your domain’s active MX records, SPF validation and DMARC policy in one click. No registration required.
Why it matters
Three records, three shields
DKIM
A cryptographic signature proves the message arrived authentic and unaltered.
DMARC
Sets the policy (quarantine or reject) for forged mail and reports abuse to you.
Found a problem?
A missing DMARC or SPF record leaves your domain exposed. Our team will walk you through the fix, free.