Microsoft's recently released Outlook.com preview has rocketed past the 10 million users mark less than a month after being released.
The company revealed the news on its Windows Phone Developer blog on Monday, while announcing a host of new features for its SkyDrive cloud storage service.
"Since we launched the Outlook.com preview two weeks ago, we have been truly humbled by the reception," wrote Microsoft vice president Chris Jones.
"We've received hundreds of great comments, participated in thousands of threads on @reddit, @gizmodo, @neowin and are excited to share that, as of today, more than 10 million people have signed up and started using Outlook.com."
The service is a marked upgrade to Microsoft's previous Hotmail email client, boasting a completely redesigned user interface and increased social media integration.
The new email service also offers tools to organise emails based on content and sender and includes Facebook, Free Office Web apps and SkyDrive integration.
The full version of the service is expected to be released in October alongside Microsoft's new Windows 8 operating system.
For a full look at the new Outlook preview check out V3's opening hands-on review.
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