By default, the Outlook 2016 for Mac folder list groups similar folders, such as inboxes, from all your email accounts together. This feature may make it difficult to tell which folders and messages will have the 16-month employee email retention policy applied to them.
To turn off unified inbox so that each account and all its folders are separated in the folder list:
- On the Outlook menu, click Preferences.
- Under Personal Settings, click General.
- Under Folder list, uncheck the Group similar folders, such as Inboxes, from different accounts check box.
