---
title: What is SPF
description: "**SPF **is a form of email authentication that defines a process to validate an email message that has been sent from an authorized mail server in order to detect forgery and to prevent spam."
url: "https://support.bluspider.com/kb/what-is-spf/"
updated: "2024-08-09"
category: Email
---

# What is SPF

**SPF **is a form of email authentication that defines a process to validate an email message that has been sent from an authorized mail server in order to detect forgery and to prevent spam.