3D Message Free

3D Message Free is an easy-to-use, parametric CAD tool for everyday communications. It is an ideal helper for anyone who likes to illustrate an idea or an explanation easily and quickly by 3D drawing. In a few minutes, you can compose a scene, populate it with objects, change object dimensions, location, orientation, colors, and reflectivities. The scene files are amazingly small (only a few kilobytes). You can send them by email.