Suggested responses should be marked so the recipient knows it might be "shorthand"
Suggested responses should be marked so the recipient knows it's a suggestion and not a manually typed response. This allows senders to use them as a "shorthand" even if they are only an approximation of a sensible response. This tips the recipient off that the response may have a "stretched meaning".
Them: "Is it alright if I do that one thing?"
Me: "Right on!" (Suggested response)
In this case, "Right on!" doesn't quite align with the flow of the conversation, but the recipient knows I'm simply answering in the affirmative.