A Godsend for Mac users
I used to cringe when I received an email from a Windows user with a winmail.dat file. Now I just drag it to Letter Opener (which I keep on my dock) and voila, I see what I need to see. Though I agree with other reviewers, my Mac OS should be able to detect the file and just open it.
SharksFanTim about
Winmail Viewer - Letter Opener