My organization does not need emails defined as an activity. I have found exactly the option to make this customization, but I cannot edit it. Under the Customize the System window -> Email Options, there are check boxes for 'Define Email as an Activity
Entity' and 'Display in Activity Menus'. They are both checked but cannot be unchecked and I'm certain this is the option selection that I want to disable. Why can't these check boxes be deselected? Yes, I am a system administrator. Any other ideas as to how
to remove the email entity as an activity?