[belfastdispatcher]

Any option listed above is OTA and synced. And yes, for many of my clients, this is mandatory, as contacts does not only means email address, but also "client" information upgrades ...
I understand very well it's not necessary for each and every company, yet we can't compare Exchange + 365 with a "simple" IMAP server.

Oh, I understand the benefits of it but if exchange is being used just to get push email on a non BB mobile phone then it's a huge waste no?