Winmail.dat File Viewer is the easiest, fastest, most reliable way to extract, view, and save the the sender, receiver, subject, and message text of winmail.dat files.
Its completely frustration-free: just double-click the win mail.dat file and youre instantly presented with a list of its contents. Double-click the attached files to open them, or drag and drop them on the desktop. In most circumstances, you wont even need to leave your Mail program.