The company says it offers a comprehensive email portfolio with four of the best messaging solutions in the industry. It recently added Managed Microsoft Exchange to its suite of mail products, providing users with a highly deployed email and collaboration solution. Rackspace's suite of messaging and collaboration solutions include Noteworthy Managed Mail, Imail Server by Ipswitch and Dedicated Microsoft Exchange, where a customer manages their own Rackspace-hosted Exchange server.

"Rackspace's mail portfolio was created in response to customer demand for email services that are backed by the same Fanatical Support that we provide for our hosting services," says Emil Sayegh, director of product marketing at Rackspace Managed Hosting. "Our suite of messaging services has received great reception from the market and we have recently surpassed the milestone of delivering reliable, flexible email solutions to more than 100,000 users."

Last week, Rackspace's founders and top executive were named Entrepreneur of the Year by Ernst & Young.