Directly supporting transactional emails for Auth0 is a great idea. Given all the people that are using Auth0 for our login flows, it's amazing you're the first person (I've seen) that's come up with the idea of offering good looking transactional emails integrated directly into the Auth0 flows.
I confess I'm not sure whether that's a thing folks will pay for, but I can easily see it being a great "loss leader" to get folks using your product and then you upsell them for all the other emails they'll need to design.
Also haven't seen it done yet. Maybe because Auth0 is a developer product, most of the developers ended up just adding HTML manually. But still I can imagine having a direct integration is way more convenient.
I get what you mean, but it could definitely be a nice way to get users familiar with the tool.
I confess I'm not sure whether that's a thing folks will pay for, but I can easily see it being a great "loss leader" to get folks using your product and then you upsell them for all the other emails they'll need to design.