Hello quick question, when I am in campaign set up and then scroll to options, it says zero. I was told if I leave it at zero it will send to the whole list. I created a second campaign because I sent the first one I left it as max subscribers. The second one I sent, I left it at zero, I had no opens and or clicks when I left it at zero. But had many opens and clicks when I took out the zero and put max subscribers. Both campaigns sent to the same list. Should I always send it so it says max subscribers since it seems that more people open the email that way?