If you open a file with TNEF's Enough and receive an error the reason could be one of many. The most obvious is that the file is not a TNEF file. For example, opening a.ZIP archive file with the application would give you this error. Another possibility is that the file is a TNEF file but is currently encoded in another format. TNEF's Enough allows your iPhone, iPad or iPod Touch to read and extract files from Microsoft TNEF files. The files are usually received via email from Microsoft Exchange and Microsoft Outlook users. Standard e-mail programs will receive the TNEF file as an attachment named 'winmail.dat.'

If you’ve ever received an e-mail from a user of Microsoft Outlook connected to a Microsoft Exchange Server and you’re on a Mac, you may have been frustrated by the annoyance that is ‘winmail.dat’. It’s a proprietary attachment format that Microsoft developed years ago and for some reason continue to stick with today, even though their e-mail clients are the only ones that traditionally support it.

This is even more frustrating if you’re on a Mac, because, unless you use the latest Microsoft Office which comes with a Mac version of Outlook, you won’t be able to open these files natively.

Fortunately, there’s TNEF’s Enough which will rescue you. It’s a little free application that you can use to open winmail.dat attachments and get to their contents. I’ve tested it personally and it enabled me to get to an Excel Spreadsheet that had been sent to me by an organisation that refuses to get into the 21st Century with their IT.

Whilst TNEF’s enough does work, and it works well, I find it a little less than intuitive to use. It’s quite possible that the way I would like it to run is not possible given the way Apple can be with their applications, but if it’s possible it’d be nice to have the application operate as a Mac Mail plugin that simply deconstructs the winmail.dat file in situ and doesn’t require me to drag and drop or save the attachment first. It’s a minor thing, and to be honest, I’m just glad I can get at the contents of a winmail.dat at all.

Ideally winmail.dat would die and no-one would need TNEF’s Enough, but until that day comes, if you need to open winmail.dat files, this is an easy to use solution (albeit with a couple of extra clicks that’d be nice not to have) and you can’t argue with the price – it’s free!

• 7/10
  Design - 7/10
• 7/10
  Ease Of Use - 7/10
• 7/10
  Ease Of Install - 7/10

Summary

Positives: free, works
Negatives: A little clumsy

Website: http://www.joshjacob.com/mac-development/tnef.php

Content Type Application Ms Tnef

The 'winmail.dat' file can contain attachments, contact files (.vcf) or calendar files (.ics) as well as a rich text or HTML version of the email body. TNEF's Enough can open the 'winmail.dat' file and allow you to extract the attachments.

Reviews

Wonder App! Easy to install and works beautifully!
Spirited4sure

Love this App!

Perfect
Ljohiller

How do i download films on my iphone. Thank you. I’d get these winmail.dat files and wince “ nobody else ever has a problem” ...not anymore. Thank you.

It actually works
Soccergirl_1090

Download php designer 2006. This is very useful and actually works. I had to open a file school related and when I found out about this app it was a life saver. Very recommended and easy to use.

Waste Of Time
Hutton23069

Once email is copied to this app, the app does NOT show winmail.dat attachments. Worthless to me.

Works on my iPhone 11
Plpohio

Just downloaded and have used several times. It works great! Thank you

Works great for me
Stiz_

For as little as I receive winmail.dat files this is the only app that would let me open them for free so no complaints here. When I tap the attachment and copy it to the app it does open up and say 'error reading file' as if it didn't work but then I hit ok and tap on the file below and it worked like a charm.

Crashes
Romeo29er

I open a win.dat file on my iPad, choose TNEF's Enough and it immediately crashes. Any suggestions? If I get it working I may re-rate

Crashes every time
Garp!

Use this on my MacBook Pro and it works flawlessly. But on my iPhone it is completely useless. Crashes every time. I deleted and reinstalled, but same thing.

Tnef Download

Worked good on IPhone 6 plus with IOS 10
Matt123443216362

Tnef File

I simply tapped on the winmail.dat item that I wanted to open, chose import with TNEF, and it worked perfectly.Thanks for creating this app. 😀