Here are Information Week’s top five reasons they think BlackBerry is the king of mobile e-mail.

5. Carriers like the BlackBerry. What, you say? Why would carriers like BlackBerry? Don’t they always complain about the “RIM tax?” Well, they do, but they also like to collect revenue. And BlackBerry devices sell contracts.

4. Device management is included with the BlackBerry Enterprise Server (BES). IT policy control is a big reason BlackBerry wins. IT managers need total control over what their employees are able to do with a wireless device. BES can manage mobile devices and that’s important.

Read More after the jump:
InformationWeek Weblog: The Top Five Reasons BlackBerry Is Still The King Of Mobile E-mail