A messaging system may receive a plurality of messages in a first conversation among a plurality of conversations. It may be determined that a first message in the first conversation comprises information identifying a first group and authorizing the first group to participate in the first conversation. An association between the first group and the first conversation may be stored in at least one database. Data associated with the first group comprising information identifying a plurality of users in the first group may be retrieved from the at least one database. At least a subset of the first conversation may be sent to a plurality of messaging applications associated with the plurality of users based on the retrieved data.