Google Inc. (NASDAQ:GOOG) acquired a company called Postini in 2007. After buying them, they had incorporated cloud-based spam and virus protection into enterprise products. Now they are using Postini to create a cloud-based e-mail continuity service to launch a service called Google Message Continuity.
Google Message Continuity lets you continuously access your e-mail even if the servers go down. This service works with Microsoft Exchange as well. You can find out more information on www.google.com/postini.
“Google Message Continuity works by replicating email accounts hosted on Microsoft® Exchange Servers in the cloud, using Gmail, Calendar and Contacts. If the Microsoft® Exchange Server fails, or requires scheduled maintenance or downtime, all you have to do is log into Gmail and continue regular, up-to-date email communication through Google. Since Gmail and Microsoft® Exchange are constantly synchronized with each other, you can seamlessly switch from one email environment to the other,” said Group Product Manager of Google Apps Rajan Sheth on the Google Blog.