Add Multiple Subscriptions for the Subscription emails
We should be able to send the exact same e-mail, without having the need to repeat the procedure many times, to different type of subscriptions. Valid Subscriptions or course.
Now the subscription email will only allow you to choose a "single subscription" and this is very time consuming and mistakes can easily happen since it is a manual procedure.
Almost all on-line services render multiple subscriptions therefore we have to be able to choose multiple valid subscriptions and not only one.