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Overview
An Outlook calendar in your UT email account can be shared with other UT staff, faculty, and students. OIT Email administrators confirm that the functionality to share calendars with external (non-UT) colleagues is not available in our Office 365 tenant.
Instructions
Outlook for Windows
See Microsoft's instructions for Share an Outlook calendar with other people in their knowledge base.
Outlook for Mac
See Microsoft's instructions for Share your calendar in Outlook for Mac in their knowledge base.