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 straightforward ...

You can unzip a file on a Mac by double-clicking on it to open the file with Archive Utility, or by right-clicking and selecting "Open." ...

Many times when receiving mail attachments with the new Exchange-enabled Microsoft Entourage v.X from Windows users, you will get a winmail.dat file that is inaccessible under Mac OS X. Alan Sill ...

If you need to open a file with the rar extension on your Mac, there's a handy app called The Unarchiver that can help you do just that. Rar files are commonly used to extract a huge amount of data — ...

Q. I sometimes receive e-mail messages with a “winmail.dat” file attached that I cannot open. Why does this happen, and what can I do to fix it? A. The winmail.dat file usually appears because various ...