Well it was kinda weird. I was able to download prior to getting the email. In the client on the division 2 page, there is a preload button. For awhile that opened a window asking for a key, eventually though when i clicked it, it opened the download window and actually worked. Then like a million hours later i got the email welcoming me to the beta test.
And yes i am weird. I dont think you will find a single solitary soul who will dispute that.