Systems and methods are provided for organizing communications of multiple communication services. Specifically, techniques are described for organizing data according to detected identities represented aggregate accounts across multiple communication services, as opposed to merely on the basis of accounts on such services. An identity-aware data management system is disclosed that can generate, on the basis of communications of a first party among multiple communication services, a reduced connection graph of the first party. The reduced connection graph of the first party can reflect second parties with whom the first party has communicated, each second party representing an aggregation of multiple accounts of a second party across communication services. The identity-aware data management system may then enable the first party to search, filter, or organize communications according to the reduced connection graph.