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The primary alternative to BlackBerry Enterprise Server is BlackBerry Internet Service. The development of this service is aimed at the average consumer rather than for the business consumer. POP3 and IMAP integration are allowed by these services for the personal user. It allows upto 10 e-mail accounts could be accessed including popular emails Gmail, Hotmail, Yahoo and AOL. MySpace, Facebook and MSN can also be accessed by using special bundles. Latest BlackBerry devices are using proprietary BlackBerry Messenger for sending and receiving instant messages through BlackBerry PIN or barcode scan. This is a BlackBerry Alliance program for the partners who work under contract with RIM for creating new BlackBerry applications.