Abstract: Digital communication messages processed by each specific one of a plurality of client computers are tracked and indexed. A query made by a first client computer against a base of digital communication messages of the organization is received by the client computers. The indexed communication messages are searched based on the query, and a search result is obtained. Relevance between the query and the search result is determined. Users operating client computers are prompted to indicate whether to respond to the query responsive to determining that the relevance meets a criterion. An indication to respond to the query is received by one or more client computers of the plurality. One or more responses are generated by the one or more client computers and transmitted to the first client computer.