Set up an Outlook account to my iPhone

Open the Intune Company Portal app. If you're using Microsoft Exchange, you'll need to enroll your iOS device in Intune. Once you're logged in, enter your full email address in the 'Email Account' box and tap Next. Your account may ask you to select an email provider. If you're unsure of which option is right for you, contact your IT admin.

For more read - https://emailspedia.com/how-to-set-up-outlook-on-iphone/