Systems and methods in accordance with the present invention allow for messages to be delivered from one application to another over a network in discrete groupings or communication sessions. For example, a sending computer system sends a group of related messages to a queue at a recipient computer system. The recipient computer system identifies that the messages of the group are related, and initiates a session-oriented communication channel. The recipient computer passes the group of messages to an appropriate application, and opens a different, new session-oriented communication channel for a new group of messages that are not necessarily related to the first group of messages. In one implementation, an order identifier in each of the received messages instructs the recipient computer system on what order, if any, the messages in a group are to be processed by the specific application.