I find it hard to evaluate "no code" as a monolith. In some cases, if you can't think like a programmer, the fact that your "code" doesn't look like "code" isn't going to help you. However, (having clicked through to your twitter), I am familiar with Courier, and agree it is brilliant[1][2].

[1] No affiliation

[2] I've built complex notifications systems myself and think Courier is a beautiful solution for coders and non coders alike.