I can easily set it to allow shop owners to turn on/off individual notifications.
Right now the email is sent for only 1 event
If a RMA is approved or rejected an email is sent with details to the customer.
However the full event list will be
Approve/Reject RMA
RMA Canceled
Comment Posted
Admin uploads file
So when I am done coding those in each shop owner can turn on/off those alerts. So if they choose to email them via another method then that is easily done.