1. In a computer system wherein messages are transferred between participants, at least some of which are human users of the computer system using the computer system in furtherance of work projects, and wherein a workflow system handles task-based operations in a structured environment, a method of handling tasks embodied in messages as tasks in the structure environment, the method comprising: sending a message from a sender to a user computer system; upon review of the message at the user computer system by a user, accepting input from the user representative of a trigger for transforming the message content to a workflow object, wherein the workflow object is a structured representation of one or more tasks to be performed by one or more assignees including linkages between tasks; following a trigger for transforming, accepting user input as needed to obtain task-related information other than information present in the message; once the user input is obtained, generating one or more workflow objects for tasks representing by the message; and providing the one or more workflow objects to a workflow system for workflow handling.