What Is Tentative In Outlook Calendar. Tentative is a feature that allows users to notify the meeting administrator of their potential attendance to the meeting, even if their ability to join is uncertain. This is to prevent others from.

Basically, tentative indicates that you/attendee may join the meeting, and it’s still added to the calendar (and they may propose a new meeting time if the option is enabled). It’s like saying “maybe” or “i’m considering it.” when you receive a meeting.