Gnome developers are working on a mail client that will be much more attractive and lighter than the present Evolution suite. Of course, it wont be as robust and enterprise standard as Evolution, but the below screenshots make it look promising.
This mail client will support conversation view, much like Gmail, which will show as recipients of message chatting with each other. Also the compose message box looks a lot cleaner. This mail client will be much more integrated with other Gnome apps, and attaching documents will be a lot simpler.
Although the whole design looks much of Mac OS inspired, will it be a good move?