In a communications network including a plurality of communication channels through which communications are configured to be transmitted between a plurality of network users, a method of managing communications to be transmitted to a particular user from the plurality of communication channels and/or network users, the method including: receiving a communication from a particular communication channel or another network user, the communication intended for transmission to a particular user; determining whether or not to transmit the communication to the particular user, based upon whether or not the communication satisfies one or more predefined characteristics relating to the particular communication channel and/or the other network user; and transmitting the communication to the particular user when the communication satisfies the predefined characteristics.