You can set a Sensitivity Label on your messages to help recipients know your intentions when you send a message.
This is a feature activated within an organization, so if you don’t find the feature it may not be activated.
Select New Message to start a new email.
Click Sensitivity in the toolbar. If you don’t see if, click on the See more options (…) button.
Note: If you still don't see the Sensitivity option, your organization may not have the feature activated in Outlook.
From the drop-down menu, select the Sensitivity Label.