I guess if you are being picky, there is no native app on the PB for mail. At least until Feb. 17 when THIS http://www.engadget.com/2012/01/10/b...os-2-hands-on/
However, I access my Rogers ISP account, Gmail and Live mail account on my PB all the time using a browser. Not much of a problem.
Take a look at that video for a great preview of the OS 2.0 apps as introduced at the CES show last week.