Free tool
DMARC record checker.
DMARC ties SPF and DKIM together and tells receivers what to do with spoofed mail. Gmail and Yahoo now require it for bulk senders. Enter a domain to look up its policy and reporting.
Run the check
We look up _dmarc.yourdomain
A server-side DNS query for the v=DMARC1 TXT record — no signup, nothing stored.
We grade the policy
Enforcement level (none/quarantine/reject), whether aggregate reports (rua) are configured, and pct coverage.
You get a fix list
Each finding says exactly what to change, in the order it matters most.
Other free checks
SPF checker
Look up and grade your SPF record — policy strength, multiple-record errors, and DNS-lookup limits.
Blacklist checker
Resolve your mail-sending IP and check it against Spamhaus ZEN, SpamCop, and Barracuda — the well-known DNSBLs.
Spam-word checker
Scan a subject line and body for common spam-trigger phrases like "act now" and "100% free" before you send.
CogniLead ships RFC 8058 one-click unsubscribe, suppression, and a reputation circuit-breaker — the deliverability bar Gmail and Yahoo now enforce. You bring the leads.