Abstract: High volume electronic mail messaging transfer systems and methods employ several groups of servers in order to more efficiently handle processing and transmission of messages to large numbers of recipients. A first group of servers designated as the A servers in the preferred exemplary embodiment provide storage for databases containing various electronic mail lists. These servers also preferably contain the majority of software which is used in manipulation and processing of messages for transmission to the recipients identified on the lists. A second class or group of servers referred to as the B servers is preferably employed under the control of the A servers. It is the B servers which actually perform mass delivery of the electronic mail messages. In a further preferred exemplary embodiment, yet another group of servers known as the C servers is used to collect bounced electronic mail messages and to provide this information to the A servers.