Outlook Express

n. e-mail and news client provided by Microsoft and bundled with operating systems

Outlook Express is an e-mail/news client that was included with several versions of Microsoft Windows, starting with Windows 98 through the release of Windows XP. Outlook Express was also bundled with Internet Explorer 4.0, and available for Windows 95 and the classic Mac OS 9. The release of Windows Vista in 2007 replaced Outlook Express with Windows Mail. Microsoft Entourage, sold as part of Microsoft Office for Macintosh, has replaced the Macintosh version.
See more at Wikipedia.org...