[Theryston]

agree, that's exactly why we're starting with css transformation issue. for example you can use flexbox in your css and the jsx mail compiler will turn flexbox into something that email clients understand. but this is still in the beginning, however currently jsx mail blocks you from using css stuff that email clients won't understand

[Hansenq]

Oh, now that's actually really cool and useful! If you pair that with a way to preview what the email looks like in different email clients (like Litmus), that would significantly increase the value of this tool.

I didn't see any mention into how the tool's able to translate modern CSS into email-client-supported CSS; might be worth calling that out as the main value prop, as that's the real thing that I care about when building emails.