The Division of Information Technology (DIT) recommends using Outlook for MacOS. However, many wish to continue using the Mail software. Instructions for setting up a UI mailbox in Mail can be found here: Setting up a UI mailbox in Mail for MacOS
Begin by installing Office 365 on your computer, if you have not done so already. For instructions see: Download and installation of the Office 365 package
Once Office 365 has been installed on the computer, go to Applications in the Finder and search for Outlook. Drag the application down to the dock to easily access it later.
If you are opening Outlook for the first time, skip ahead to Step 3.
1) Open Outlook and go to "Tools". Select "Accounts":
2) Click on the plus sign „+“ at the lower left corner:
3) When opening Outlook for the first time, a window appears in which you enter your UI email address before clicking "Continue":
4) Another window opens. Enter your password and click "Sign in":
5) You have now registered your UI email address. Outlook takes care of setting up your mailbox. If you wish to add additional email addresses, select "Add Another Account". Otherwise, choose "Done":
Your mailbox should now be set up in Outlook. Mail download may take a few minutes if you have a large mailbox.