PLEASE allow the Administration notification area to populate all of the placeholder options available in the notification section. Event date, Total amount and regular items are crucial placeholders - especially when you are doing multi day events.  

This is something that definitely needs to happen, and seeing as this post is close to two years old, I'm not sure its a priority.  We should have the ability to customize any notification by selecting any existing placeholders we choose.  For example.  I want my Administrative notifications to show what the registration items were, but it doesn't.  However, the confirmation constituents receive does have this placeholder in the notification.  Seems like an easy fix to me!