AMP for Email (developers.google.com)

AMP is being discontinued? https://en.wikipedia.org/wiki/Accelerated_Mobile_Pages#Depre...

Google working on replacing the open internet protocols with their own again.

I guess I just don't understand how rich, heavy or dynamic people need their emails to be. I don't want to blindly oppose something so I'd love to hear why someone would want to serve their email content over AMP.