SPF Optimizer

Generate a safer, cleaner SPF record without guessing which senders are active.

MXFend analyzes your SPF record's DNS structure and only applies deterministic, structural cleanup automatically — removing exact duplicate terms and terms that can never be reached. Anything else — removing a sender/provider, flattening an include into static IP ranges, changing the all qualifier, or replacing a deprecated ptr mechanism — is shown as a review recommendation for you to verify, never applied automatically. MXFend never changes your DNS records for you.

Analyzing SPF structure…

Related MXFend tools

SPF Lookup Visualizer See your SPF record's full include/redirect tree and DNS lookup budget. SPF Checker Check whether your SPF record is present and safe. Email Security Score Complete domain report for authentication, reputation, and transport security. DMARC Checker Check your DMARC policy and enforcement. Email Header Analyzer Paste raw email headers to understand SPF, DKIM, DMARC, ARC, routing, and sender identity.
MXFend

Free email deliverability tools for domains.

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Email Deliverability Checker SPF Checker DMARC Checker MX Checker
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Knowledge Base Email auth guide Emails going to spam Domain reputation SMTP TLS MTA-STS TLS-RPT
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