There are a couple of ways to do this, so let's cover one method each for Windows and Mac computers. You will need a 'translator' program that will allow you to read the information in the file and show you all the color, text and font formatting of the original email message. However, it's not a file you can easily open. Essentially, it contains the information required to render the email in the Rich Text Format in case your own email client doesn't support it.
Did you ever get a strange email with an attachment that says 'winmail.dat' and you didn't know what to do? Don't worry, this mysterious file type is actually a support file for the Microsoft Outlook Rich Text Format.
