FREE TOOL
Check your domain's SPF, DKIM, DMARC, and MX records in seconds.
No signup requiredResults in 60 secondsUsed by 500+ teams
HOW IT WORKS
This tool performs real-time DNS lookups on your domain to verify four critical email authentication records: SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), DMARC (Domain-based Message Authentication), and MX (Mail Exchange) records. Each check is scored independently, and common configuration issues are flagged with specific remediation advice.
FAQ
ALPN OS includes full sending infrastructure setup: domains, mailboxes, warmup, and ongoing monitoring. Starting at £1,000/month.
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