I love the UI and would use a UI only version of this. I pay for highcharts and pintura.
The backend stuff is not super helpful in my case because my app already has all those capabilities (email, SMS, etc) and it’s wrapped up in messaging within the app. I wouldn’t want to use an outside provider for that stuff. I also generally want custom automations - otherwise I would just be using Zapier - so while the example basic stuff is reasonable, I would be looking for a fully custom option for each building block.
Best of luck - seems like it has potential.