Application control allows the creation of custom email address lists as email address objects. Email address objects can represent individual users or the entire domain. You can also create an email address object that represents a group by adding a list of individual addresses to the object. This provides a way to easily include or exclude a group of users when creating an App Rules policy or a Security Policy of type SMTP client. For more information, refer to Applying Email Addresses Objects.
From Email Addresses page, you can: