BES (BlackBerry Enterprise Server) Express gives you access to your Microsoft email, calendar and more. Businesses with an existing Microsoft Exchange Server or Windows Small Business Server can easily get started with BlackBerry Enterprise Server Express. It works with any BIS (BlackBerry Internet Service) pack or a BlackBerry Enterprise plan and has no additional software fees or user license fees.
BES Express is designed to support up to 75 BlackBerry smartphone users if it is installed and runs on the same server that runs Microsoft Exchange 2003, 2007, 2010 or Windows Small Business Server 2003 or 2008.5 This eliminates the need to purchase an additional server. If you require more than 75 users, BIS Express can be installed on a separate server(s).
Over 35 IT policies further support the needs of your business by providing capabilities that include the following: