So I've migrated from my Treo 650 to an iPhone, and now I'm using Outlook for the first time as my PIM, but not as my email client. I may eventually move from OE to Outlook for mail, but I'm not ready ...
I might be a dinosaur, but email is still my jam. I prefer communicating via email to any other means of interaction (other than face-to-face). Email is efficient, used globally, isn't OS-dependent, ...