---
title: Prerequisites
description: Prerequisites resources and guides for Email Security.
image: https://developers.cloudflare.com/zt-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/cloudflare-one/llms.txt  
> Use this file to discover all available pages before exploring further.

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# Prerequisites

* [ Microsoft 365 as MX Record ](https://developers.cloudflare.com/cloudflare-one/email-security/setup/pre-delivery-deployment/prerequisites/m365-email-security-mx/)
* [ Google Workspace as MX Record ](https://developers.cloudflare.com/cloudflare-one/email-security/setup/pre-delivery-deployment/prerequisites/gsuite-email-security-mx/)
* [ Cisco - Email security as MX Record ](https://developers.cloudflare.com/cloudflare-one/email-security/setup/pre-delivery-deployment/prerequisites/cisco-email-security-mx/)
* [ Cisco - Cisco as MX Record ](https://developers.cloudflare.com/cloudflare-one/email-security/setup/pre-delivery-deployment/prerequisites/cisco-mx/)

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