EoD turned out to be completely arbitrary, trust me.
Lots of people who got it that first night got delivery the next day.
Some people who got it didn't get delivery the next day.
Some people didn't get it and got delivery the next day.
Some people never got it and got delivery a few days later.
Near as I can tell, it was not possible from the outside to discern a pattern to who got it, and therefore it should be called 'Email of Randomness'.