Microsoft Mail or MSMail refers to the corporation's earlier email products, such as Star Nine Mail and MCI Mail, which were developed for Mac and PC networks. Presently, Microsoft provides free email services through Outlook.com, which is an upgraded version of the older Hotmail. Currently, Outlook.com looks cleaner with updated features that include mobile apps, automation, social sharing, and online messaging. Meanwhile, Microsoft's newest desktop email client is Windows Live Mail, which is stand-alone software from its Essentials Suite for Windows XP. The company's Microsoft Mail for PC Networks was replaced by Microsoft Exchange, which consists of a mail server, a shared calendar, and a contact manager. Migration from MSMail to Exchange required a general overhaul of the email server, including a big shift to using the Microsoft Exchange Internet Mail Service when connecting Exchange accounts to the SMTP server.