Need to view a winmail.dat file on your Mac? Now you can!
WinMail DAT Viewer is the easiest, fastest, most reliable way to extract, view, and save the contents of winmail.dat files.
It's completely frustration-free: just double-click the win mail.dat file and you're 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 won't even need to leave your Mail program.