It would be helpful to be able to see what emails have been sent to a class in the class history. The communication log does not show what class any recipients are in so to determine if a specific email has reached an entire class you must look at the individual history of each student. We recently had a situation where we did a weather cancellation that a student showed up for class. There was no way to tell if the email was sent to the class because the rest of the students in the class also attended other classes that evening. If we could have opened the class history and seen the email, we would have known.