A method comprises receiving one or more search requests from one or more users, each search request comprising a request for relationship information that is determined using email data, and each search request including at least one of a first name, a last name, and a company name of a target individual. The method further comprises storing search information associated with the one or more search requests. The search infatuation comprises a plurality of fields including a user identification associated with each of the one or more users, a name of the one or more users, a type of search request received, a name of the target individual, an email address associated with the target individual, and a time at which the search request is received. The method may further comprise generating an audit report based at least in part on the stored search information, wherein the audit report comprises at least one of the plurality of fields. The method further comprises storing the audit report.