As much as I want to applaud your progress here, as a user I want transactional stuff to stay in my email inbox. My iMessage is already starting to become overwhelming from spam and apps — I want fewer messages not more.
Sorry OP. Not all products need to succeed.
My iMessages are for conversations with people that I actually want to talk to. The notifications are high priority because it’s with people that I want to talk to.
I can’t imagine my annoyance if I were to receive an iMessage notification while I’m expecting an important message, only to find that it’s more spam.
My email inbox is already a wasteland because of this. The absolute last thing I need or want is for the same thing to happen to iMessage.
I don't get the distinction you're making. I'm not an expert in mobile messaging so maybe I am missing something obvious.
And what about WhatsApp?