Google announced tonight the availability of “Google Apps for Your Domain” which currently includes private-labeled: Gmail, Google Talk, Google Calendar and Google Page Creator. A free version and a paid version are available, without any further details on the paid version at this time.
Sign up and setup for the service is pretty easy and requires the same kind of validation as Google Sitemaps.
For Gmail, you can send and receive email using the designated domain name, but with all of GMail’s features. For Google Page Creator, you can create pages to be published under a subdomain, example, seo.yourdomainname.com so you’ll need to add a CNAME record.