<p>Exactly one year ago today, Microsoft released the preview version of its Web-based consumer email service. Over the past year, Redmond has delivered more than 600 additions, changes, and improvements packaged in 34 feature releases for Outlook.com.</p><p>"It's been a pretty busy and exciting 12 months (and less than 6 months since we came out of preview on February 19)," Outlook.com's group product manager, Dick Craddock, wrote in a blog post. "Thank you all for the hundreds of improvements you've helped us make, and for choosing to make Outlook.com part of your daily lives."</p><p>At this point, Outlook.com boasts more than 400 million active accounts, making it the fastest growing email service, according to Microsoft.</p><p>Outlook.com launched in preview last summer, and it gained 25 million active users in just under four months. PCMag named Outlook.com as the top Web app in our Best Products of 2012 list, describing it as "the best thing to happen to email in years." It emerged from preview in February with 60 million users. By May, Microsoft had transitioned its entire Hotmail base over to Outlook.com.</p><p><a href="http://www.pcmag.com/article2/0,2817,2422526,00.asp">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.ubergizmo.com/2013/07/outlook-com-turns-one/">Outlook.com Turns One</a> (Ubergizmo)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dEkCPAlX7WUyRdMKTxAcpe2P6_B1M&ned=us">8 additional articles.</a></p>