If you're having trouble opening a DAT file, I'll show you a simple and free way to do it. This method works on both Mac and PC. Just open your browser and go to winmaildat.com. It's a ...

Hi Mercutio,<P>I use . It's a Jasc software product, and it installs a context menu option to open any file with it. DAT files are not a problem for QVP, but it is shareware. Cheers. Report E ...

Another approach is to download a program that can translate the winmail.dat file. Several developers have created helpful programs that can open the files.

Right-click the DAT file on your PC and click "Open." Click "Select a program from a list of installed programs" and click "OK". Click "Microsoft Excel" from the list of programs on your computer.