Multiple Subscriptions From the Same Customer Requires Different Email Addresses

Often we have customers who want to have two (or more) independent deployments for their own patrons, etc. In order to keep that separate in licensing, we require that a distinct email address be used for each individual customer subscription.

The customer can set up email aliases on their end to accomplish that goal, where these aliases ultimately resolve back to a central email account to receive purchasing notifications, order receipts, etc.