Forum Discussion
Require Outlook app to access Exchange Online on managed devices
In the past, I have been able to push out an email configuration profile and a device compliance policy (as seen below) to require a managed email account in order to enforce a managed device complia...
As the email setting is only available on iOS devices, a compliancy policy cannot be used to assure a managed email profile on all device types. That being said, if you can deploy and configure, then require Outlook Mobile to access Exchange Online via a Conditional Access Policy that requires approved client apps.
Reference
Deploying Outlook for iOS and Android app configuration settings | Microsoft Docs
Securing Outlook for iOS and Android in Exchange Online | Microsoft Docs
Approved client apps with Conditional Access - Azure Active Directory | Microsoft Docs