The following preferences can be used to simplify account setup for Microsoft 365 (or Office 365) mailboxes, help protect company data, and support a streamlined user experience. Force a particular preference, which users can’t change.Set a default preference, which users can change.Applies to: Outlook for Mac, Outlook LTSC for Mac 2021, Outlook 2019 for MacĪs an IT admin, you may want to provide Mac users in your organization with a standard set of preferences for Outlook in either of the following ways: