What purpose would it serve?
Personally, to me. none really
nothing honestly productive or positive to come out of it.
Main things you actually wanted schedule messaging in an "email" sense would of been.. there is none really.
Because things like better timing for recipients and timezone difference and what not are not positives but lowkey negatives.
Yes, you may want to land at the "top" of their inbox, (you are also assuming, they inbox is set to newest first, which isn't always the case)
Espically in this digitial age, espically in conversation regarding BSTs and purchases.
If you have information, tell me now, I don't want to know at 8am if you already have the details at midnight.
I can take actions tomorrow morning but that is my choice.