# SPF

Source: https://joinbreaker.ai/newsletter-glossary/spf

SPF, or sender policy framework, is an email authentication protocol that creates the ability to specify which servers are allowed to send email on behalf of your domain.

*See also:* [Email authentication](/newsletter-glossary/email-authentication), [DKIM](/newsletter-glossary/dkim), [DMARC](/newsletter-glossary/dmarc)