For the next 3 weeks I'm only sending proposals before 11am. Tracking close rate.

I read somewhere that morning sending beats evening, but my sample is 4 clients so far, so who knows. I'm splitting it: proposals out before 11 am versus after 5 pm, 12 in each group. I'll report back what actually changes, if anything. If you've tracked something like this and it turned out flat, tell me — I'd rather find out now.