Okay, so last I heard there are approximately 26660 people on Pottermore. This means that less than 3% of everyone is on (actually 2.66%). There are only 38 more days until September 30th (not including today, and assuming that they will need to send out the remaining emails on the 30th). So IF they were to send out emails every day (starting tomorrow) they would need to let in approximately 2.56% of the rest of us in EVERY DAY (approximately 25,000), which would essentially double the amount of people that are already in, in one round of emails. I seriously doubt that they will be sending emails out every day, at least at this point, but it still makes me feel better to know this. :)
PS: I’m fairly confident in my mathematical skills, but I could be wrong, so if you see anything wonky let me know :]
I got in the second Pottermore email today at 10:27 A.M. and got in Day 3.
I will continue to wait impatiently for my next email :)
I hope all of you out there who have yet to receive the second email get it soon! and congratulations to those who have gotten it!