1. A method comprising: determining, by at least one processor, co-users of a communications system determined to be known by a user of the communications system based on actions performed by the user and the co-users determined to be known by the user performed using the communications system that suggest that the user and the co-users of the communication system know each other; identifying co-users not determined to be known by the user based on identifying one or more co-users not within a specified number of degrees of separation from the user; identifying, by the at least one processor, a first plurality of electronic messages from the co-users determined to be known by the user of the communications system; identifying, by the at least one processor, a second plurality of electronic messages from the co-users not determined to be known by the user of the communications system; causing one or more electronic messages, from the first plurality of electronic messages, from the co-users determined to be known by the user to be displayed to the user; and preventing the second plurality of electronic messages from co-users not determined to be known by the user from being displayed to the user.