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----
-title: Zero Trust Email Security integration
-pcx_content_type: how-to
-sidebar:
-  order: 8
-
----
-
-[Zero Trust Email Security](/cloudflare-one/email-security/) users must delete their domains from the Area 1 portal before using [Microsoft API deployment](/cloudflare-one/email-security/setup/post-delivery-deployment/api/) in Zero Trust Email Security, and complete the onboarding process in the Zero Trust dashboard. Once your new domain has been onboarded, all the information will be automatically updated.
-
-To delete your domain(s) from the Area 1 portal:
-
-1. Log in to the [Area 1 portal](https://horizon.area1security.com/).
-2. Select **Settings** (the gear icon).
-3. In **Email Configuration** > **Domains & Routing**.
-4. Go to the domain you want to delete, select the three dots, then select **Delete**.
-5. Refer to [Enable Email Security via the dashboard](https://developers.cloudflare.com/cloudflare-one/email-security/setup/post-delivery-deployment/api/office365-api/#enable-email-security-via-the-dashboard) to initiate the onboarding process for API deployment.
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