SPF Validator checks the Sender Policy Framework (SPF) DNS record for a domain to verify if it’s valid and optionally whether a given IP address is authorized to send emails for that domain.
nodejs python java api dotnet rest-api npm-package android-library spf python-package nuget-package email-authentication domain-data spf-check spf-validator apiverve spfvalidator spf-test
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Updated
Dec 9, 2025 - C#