I cannot find any answers or discussions if CSS3 is allowed in HTML emails from the search box.  I am wanting to update my company newsletters and campaigns but I don't know what properties are allowed.  A list similar to a browser list would be awesome.  Does anyone have a list that identifies the CSS properties that can be used for emails?
CSS3 allowed in email?
email;html5;css3
The Campaign Monitor people maintain a big table of CSS support in various mail clients. There's a changelog at bottom with running notes, and a bunch of CSS3 properties(mostly decorative) were initially added April 2010.