This white paper will present an improved approach to legal discovery for Microsoft® Exchange systems provided by Mimosa Systems. Unlike existing methods for legal discovery of Exchange Server data, Mimosa's approach delivers major advances in performance and granularity of information. To begin this paper, we will review the industry forces that are driving the need to manage email for legal discovery, followed by a discussion of the market-leading enterprise messaging application--Microsoft Exchange Server and the challenges it presents for legal discovery. Next, Mimosa's new approach to legal discovery for Microsoft Exchange will be described in detail and compared to existing methods. Mimosa's innovative new approach to legal discovery on Exchange Server offers legal discovery benefits for performance, quality of information captured, and for reducing the overall cost and risk of legal discovery.