No they're not. My deposit wasn't made to the IPO address, and an accidental second mail I got had yet another address.
I suspect they set up different receiving addresses for each seat member? Perhaps to merge to coin bank after IPO, I don't really know the reason.
I am only one person. I need a large margin for error(long hour tedious tasks). If I send out two emails, only the one that gets funded will be recorded. We also have some investors who want things as easy as possible and want directions on how to send to an address and I provide that as needed.
A full count of all address so far...
$ 4,829.54 10.98871897 BTC
I have 50 emails to get to and 10+ messages