The claimed subject matter provides for systems, devices, and methods for dynamic transitioning between messaging conversation classes including 1:1, 1:Many, and Many:Many (N:M) conversation protocols. These messaging topologies can be transitioned based at least in part on the number of conversants, a predetermined threshold value, and both determinations and inference related to the conversation topology, message, and conversants. The claimed subject matter can provide for effective seamless messaging conversations in unified messaging environment by reducing the overhead associated with changing numbers of conversants.