Winmail Opener could be useful for anyone who sends or receives e-mail in one of the older versions of Microsoft Outlook such as 97 or 2000 (winmail.dat). This
Winmail Opener is a small and simple utility that allows you to view and extract contents of TNEF-encoded files (infamous winmail.dat). Winmail Opener can decode and show RTF message text and all embedded attachments, has full drag-and-drop support and supports command line mode for batch decoding.
Windows 7, Windows 8, Windows Vista, Windows XP, Windows 2003, Windows Me, Windows 98, Windows 2000, Windows NT, Windows Server 2008