These are instructions on how to open winmail.dat attachment files on a Mac. You may need to do this if you've received a trusted email attachment from a Windows user that can't be opened on your Mac.

restoroot.com has announced the release of Letter Opener 3, their winmail.dat converter plug-in for Apple Mail. At its basic, Letter Opener processes Microsoft Outlook winmail.dat files without the ...

I was confused by your answer regarding winmail.dat. The file cannot be opened traditionally, at least to obtain what the receiver believes to be valuable contents. Rather, it’s used internally by ...

It’s been at least a year since I’ve received an email with a winmail.dat file as an attachment. Winmail.dat and MSG files are created when someone using Microsoft Outlook adds special formatting, ...

We keep getting e-mail attachments in winmail.dat files and can’t open them. What’s going on? Is there a utility that can extract the attachments from these? When Outlook or Outlook Express users send ...