TNEF's Enough
for macOS

Providing a free "winmail.dat" solution to the Mac community for over 18 years!

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TNEF's Enough for macOS

TNEF's Enough allows Macs to read and extract files from Microsoft TNEF stream files. The files are usually received by SMTP based e-mail programs from Microsoft Exchange and Microsoft Outlook users. The SMTP based e-mail program will usually receive either a MIME attachment named "winmail.dat" or a MIME attachment with the type "application/ms-tnef."

The file is a rich text (or MAPI) message that is sent from Outlook to Exchange. When Exchange sends the message to an outside server it writes the MAPI message as a MIME attachment. The unfortunate side effect of this plan is if the Outlook user has someone in their address book as a person who can receive "Rich Text" then the user will receive the TNEF file whether the user uses Outlook or not.

Download

See note at right about downloading/installing via Mac App Store.

Current Version:

Version 3.8 for Mac OS X 10.11 through 10.15

Legacy Versions:

Version 3.7 for Mac OS X 10.7 through 10.11

Version 3.2.1 for Mac OS X 10.6/10.7/10.8 (Intel only)

Version 2.2 for Mac OS X 10.5/10.6 (Universal - PowerPC/Intel)

Version 2.0 for Mac OS X 10.4 and earlier (PowerPC only)

See change log for history.

Install

See note at right about downloading/installing via Mac App Store.

  1. Download

    If your browser hasn't opened it, you will have a .DMG file to double click to open. The DMG will open to a disk mounted in the Finder.

  2. Copy to Applications directory

    Simply drag it to your Applications directory. You might be prompted by your system for an administrator password.

  3. Launch as needed or keep in Dock

    Most users just open the app as needed. If winmail.dat files are a chronic problem for you, you can keep the app in your doc and drag winmail.dat files to it.

How To Use

  1. Launch

    If you keep TNEF's Enough in the Applications folder, just click to launch. Or store in the Dock if you get frequent winmail.dat files.

  2. Open File

    TNEF's Enough opens winmail.dat files to show you what's inside them. Assuming you have the winmail.dat file in an email, here are a couple ways to open it:

    • Save the file out of your email program. Choose Open... from TNEF's Enough File menu and locate the file.
    • Save the file out of your email program. Drag the file to the TNEF's Enough icon in the Dock.
    • Simply drag the attachment from your email program to the TNEF's Enough icon in the Dock.

  3. Export Files

    TNEF's Enough will then show you a window representing the TNEF file. The content is similar to an email message showing the typical From and Subject fields along with sent date, message body and attached files.

    There are several ways to get the files out of the winmail.dat file:

    • Select one or more files and select Export... from the File menu.
    • Choose Export All... from the File menu to get all the files.
    • Select one of more files and drag then to Finder.

Read the application help for more information.

If you use Mac OS X Mail, check out this AppleScript to automatically open winmail.dat files sent to you.

Have Feedback?

Let me know if you have any problems with using TNEF's Enough or if you have suggestions for future versions. My time to answer emails is a bit spotty to say the least but I'll try my best to answer your questions.

Donation

If you find TNEF's Enough useful and would like to make a donation, click on the PayPal button to make a donation from your PayPal account or from a credit card.

Or use Square Cash: cash.me/$JoshJacob

Mac App Store

Prefer to install via the Mac App Store? TNEF's Enough for macOS is simultaneously released on this site and the Mac App Store.

Mac App Store

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