In the new equilibrium of people sending lots of automated emails, how would the receiver of an email distinguish between a canned response and a real response?

In the new equilibrium of people sending lots of automated emails, how would the receiver of an email distinguish between a canned response and a real response? I suspect the incentive to properly signal your email as real can reduce adoption of "Smart Compose" for non-trivial communication. So that leaves us with use cases like scheduling meetings, quick updates or alerts - most of which are already automated in some extent through notification and logging.