Technical
What is SPF (Sender Policy Framework)?
An email authentication method that specifies which mail servers are authorized to send email on behalf of a domain. SPF records are published in DNS.
See SPF (Sender Policy Framework) in Action
Related Terms
DMARC
Domain-based Message Authentication, Reporting & Conformance, an email authentication protocol that protects against spoofing. DMARC builds on SPF and DKIM to verify sender identity.
Email Deliverability
The ability to deliver emails to recipients' inboxes rather than spam folders. Affected by sender reputation, authentication (SPF/DKIM/DMARC), and content quality.
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