Winmail.dat files are TNEF’s. Transport Neutral Encapsulation Format attachment files which allow Microsoft Outlook users to receive email messages which retain the original formatting. Those files are much hated among the Mac community but there’s a way out.
For Better Or For Worse
The winmail.dat problem is so prevalent that there’s WinMail.Dat website which will extract those attachments for free. The Mac App Store has an app that does the deed, too. It’s called WinMail DAT Viewer Pro; inexpensive and it works.
Or, if you’re an owner of a new Apple Watch Edition model, the one that can skew upwards of $17,000, then you’ll prefer to use Letter Opener Pro to take care of those nasty winmail.dat attachment files.
Why? Because you have money to burn and enjoy it.
What Letter Opener Pro does is what the manual method does, but automatically, in the background so you never know it’s around, and you never get those nasty winmail.dat attachment files to worry about.
There’s a price to pay for automatic, of course, but if you deal with many winmail.dat files then Letter Opener Pro is a worthy choice. There’s also a free Lite version with in-app upgrade options– perfect to try it out to see if it works for you.
This is one of those handy utilities that is worth the price tag if you have the winmail.dat problem regularly. Install it and it just works. That’s why the reviews are good, because Mac users appreciate anything that helps them overcome a Windows and Office design flaw.