Microsoft Outlook Calendar Pricing & Plans

To share your calendar externally, open Outlook on the web or desktop, go to your Calendar view, and select 'Share' or 'Sharing Permissions.' Enter the recipient's external email address and select the level of access you want to grant, such as showing availability only or full details. Depending on your organization's administrative security policies, you may need to publish the calendar and share the generated HTML or ICS link instead.