I've just got a T2 and installed the software to synchronise with Outlook. I selected Outlook as my default, instead of the Palm Desktop, but it still installed four bits of software onto my PC so far as I can see -- Chapura Settings (which allows me to specify the defaults for synchronising with Outlook), Palm Desktop, Documents-to-go, and Quick Install.
I don't use any email function on my Palm, but on looking at the error log after I've done a successful synchronise of diary, notes, telephone list, to-do, etc. I see a note that "VersaMail has not been configured on the handheld" and "make sure VersaMail has been used at least once". So far as I can see, VersaMail is Palm's email software, and is used to send/receive email via a mobile device. From what I see, it won't synchronise unless you've used it -- in other words, you can't just download all your Outlook emails onto your Palm to read on the train. Maybe I'm wrong on this. According to the "Read this first" abbreviated booklet you need to read the Handbook which is supplied on a CD-ROM for more information.
Life was made simpler by someone at work buying one of these things so I had to work out how to set it up anyway. For future reference there are settings within Versa mail from the desktop software that allow you to configure Outlook. Not very obvious!