1. A system for locating content items in a plurality of content sources across different content servers, the system comprising: one or more processors; a memory coupled to the one or more processors; and an e-discovery client application residing in the memory and comprising computer-executable instructions that, when executed by the one or more processors, cause the system to: receive query parameters and a query scope regarding a query, the query scope comprising content sources located on at least two content servers of different types; initiate a segmentation process, wherein the segmentation process comprises iterative searches based on groupings of the query parameters; receive data regarding content items located through the iterative searches executed by each of the at least two content servers based on the query parameters; aggregate query statistics from the at least two content servers from the received data; and present the query statistics.