Look at this campaign report dated March 21, 1:00 p.m. (mailing sent March 20 at 8:00 p.m.) : in just a few hours, more than 60% of customers have opened the email and more than 20% have already logged in to register their children!  In a few hours, this campsite has gone from 2 children registered to more than 200! More than 75% of the children at this campsite were registered before arriving at the mini-club.