Customize Alert Email Notification Content
Is there a way to customize the email message template that is used when I create an Alert via the Configuration and Setup app?
I know that I can go into Composer and change the content of each individual Notification entity, but I don't want to have to make adjustments to every single one that our users create. I want to change the format.
I've looked into the possibility of Adding a Custom Notification Handler (ptc.com), but I don't think the Configuration and Setup app can be used to create alerts that will use this custom handler. If this is possible, I'd love to know how to do it.
For reference, I'm using ThingWorx 9.1.2 and ThingWorx Apps 9.1.0.

