Google for business, will be soon
I was already speaking about it months ago : Google for business
will probably be out one day more easily than with redirects, it will manage everything, and you will have your favorite mail client for work as well (better than outlock)
» GMail code hints at coming domain feature | Googling Google | ZDNet.com:
Google’s GMail has been firing on all cylinders, but it could be on the verge of getting even more horsepower. Based on information found buried deep within the javascript source, we can start to see the bigger picture for GMail — what else could they possibly add to this mail client?