In July, Microsoft rebranded Hotmail -- acquired for $400 million in 1997 -- and overhauled the service with a visual redesign, SkyDrive and online Office app integration, and ties to several social networking sites, including Twitter and LinkedIn.
Since then, Microsoft has pitched Outlook.com to current Gmail customers several times, just one example of its continued sparring with Google in the enterprise business application market.
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, on Google+ or subscribe to Gregg's RSS feed. His email address is email@example.com.
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