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BlackBerry integration into an organization’s email system is provided through a software package called “BlackBerry Enterprise Server (BES). Versions of BES are available for Microsoft Exchange, Lotus Domino and Novell GroupWise.

Individual users can often use e-mail services provided by the wireless provider and therefore can not be compelled to install a BES server on your local network, but organizations that have multiple wireless users usually run BES in its own network. While it can be very expensive to own a BES, the third hosted BES businesses GPXS provide solutions. These are the solutions with the advantages of a BES, but without the costs.
BES can act as a sort of e-mail accounts so users always have access to your e-mail. The software monitors the user’s local “inbox”, and when a new message arrives, it takes the message and passes RIM Network Operations Center (NOC). The messages were relayed to the users of the wireless service provider, which in turn delivers them to the user’s BlackBerry device. This is called Push procedure, where the mobile user does not have to synchronize the data on hand. All new e-mails, contacts and calendar entries are pushed to the BlackBerry device automatically. Storage device also allows the mobile user to access all data offline in areas without wireless service. As soon as the user connects again, the BES sends the latest data. In this way the handheld is always up to date.

BES also provides handhelds with TCP / IP connectivity which is a proxy server through a component called “Mobile Data Service (MDS). This allows the development of custom applications using data streams on BlackBerry devices based on the Sun Microsystems Java ME platform.

In addition, BES provides security in the form of Triple DES or, more recently, AES encryption of all data (both e-mail and traffic MDS) that travels between the BlackBerry and a BlackBerry Enterprise Server.

The momentum and based on the universal connectivity of the BES / MDS infrastructure are among the most valuable aspects of Research In Motion’s product. An organization may have different devices, carriers, and connected through different cellular network protocols, all functioning in an integrated manner.

Most providers offer flat monthly price for unlimited data between units and BlackBerry BES, which also increases the value of the component MDS. In addition to receiving e-mail, organizations can make intranets or custom applications with unmetered traffic.

With newer versions of the BlackBerry platform, the MDS is no longer a requirement for access to wireless data. From OS 3.8 or 4.0, BlackBerry handhelds can access the Internet (ie, TCP / IP access) without an MDS – previously only e-mail and WAP access is possible without a BES / MDS. The BES / MDS remains necessary for safe e-mail, access to data and applications that require WAP from carriers that do not allow access WAP.