Microsoft Exchange is one of the most popular email platforms available today, but there are other options available that can deliver reliable, secure messaging across devices for small businesses for which Microsoft Exchange is not a requirement. MDaemon Messaging Server, BlackBerry Edition is an easy-to-use on-premise messaging server from Alt-N, a subsidiary of Research In Motion, which features built-in support for BlackBerry smartphones in an all-in-one solution that?s easy to manage.