Following months of beta testing, Microsoft on Monday officially launched its new Outlook.com email service, announcing plans to migrate all of its approximately 360 million Hotmail users over the next several months. “Everything from their @hotmail.com email address, password, messages, folders, contacts, rules, vacation replies, etc. will stay the same, with no disruption in service,” the company said, adding that Hotmail users will be able to keep their current email addresses. “We expect all people using Hotmail to be upgraded by this summer.” Microsoft began testing Outlook.com last summer, and said the service now has more than 60 million active accounts. The service integrates with social networks like Facebook, Twitter and LinkedIn, and includes tools for clearing out inboxes and more easily sending multimedia content. Hotmail is the world’s second largest webmail service after Google’s Gmail.