Setup Outlook App on iPhone

On your mobile device, go to the App Store and download the Microsoft Outlook app.
Open the app after it is installed.
Tap Get Started.
Choose whether or not you would like Outlook to send you notifications.
If you chose to get notified, a popup displays saying Outlook would like to send you notifications. Tap OK.
When prompted to add an email account, tap Office 365.
Enter your USI email address and tap Sign In.
If the WebLogin screen displays, enter your Eagle ID and password and tap Login. Two-step authentication may also be required.
You have the option to add another account. Tap Maybe Later to proceed to your Office 365 email in Outlook.
A few screens of help text are presented, which you can read or skip. Your Office 365 Inbox then displays.