Be able to email 'All friday classes' 'All wednesday classes' 'All weekend classes' instead of having to email them all seperately. This would reduce admin time and make it a lot easier to communicate with a day of classes when information only applies to one day, a class is cancelled etc.
This can be done from the main classes page > blue More option > Check all classes that meet on [select day] > Class Actions > Send email to selected classes!