Hi Scott

I like your idea but due to information governance rules in large public organisations in the UK around the masking of emails and spam, if this were to be developed it would have to be a selectable option, so the email can go from a core /central email, or the administrator linked to the course, or the trainer.  

Having an function for all system emails to set up the default sender as the admin, trainer, manager etc, would be a useful addition - with the system admin email as the system default.

Richard