Systems and methods of determining relationship information are provided. A system may include processing logic and memory accessible to the processing logic. The memory may include instructions executable by the processing logic to access communication data associated with at least one first party. The memory may also include instructions executable by the processing logic to analyze a plurality of communications between the at least one first party and at least one second party to determine relationship information descriptive of a relationship between the at least one first party and the at least one second party. The communication data may include a call log and an email log, and the plurality of communications may include at least one call and at least one email message.