An interactive system and method for controlling access to a plurality of communications sessions involving a plurality of users including controlling access to a plurality of communications sessions, each of said communications sessions being for access by a plurality of users, wherein data identifying said plurality of communications sessions have been stored in association with data indicative of one or more characteristics thereof. The method includes receiving a request to initiate communications among members of a group of users, wherein said request includes data identifying the group of users, responsive to receiving said request, selecting a communications session on the basis of data identifying the group and at least some of said stored data indicative of characteristics of a given communications session, and transmitting messages to at least some members of the group. Each message has a message body including data providing access to the selected communications session and a destination address determined from data indicative of a given member of the group.