The app will then sort out what the winmail.dat file is supposed to be for you, which you can then save or export yourself directly from the app. Once installed, you can use TNEF’s Enough with the “open with” menu, or by dragging and dropping the winmail.dat files into the application itself.
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pdf), then save the file as usual to a place you can access it in the Finder In the save dialog box, remove the ‘dat’ extension and replace it with the intended attachment file type (for example.Right-click (or Control+Click) on the winmail.dat file contained in the message and choose “Save Attachment”.Open the email message containing the winmail.dat file in Mail for Mac.Be sure you have the show file extensions feature of Mac OS X enabled for best results.
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For example, if you get an email from an Outlook user in Windows saying “attached is the import Microsoft Word document” then you’d know it is supposed to be a.
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Often the easiest way to open a winmail.dat file in Mac OS X is to save it and relabel the file as the intended file type. There are several ways to open and access winmail.dat files in Mac OS X, we’ll cover three of them one involving a relabeling trick, another using an application, and another using a webmail client Method 1: Saving the Winmail.dat File as the Intended File Type Because it can be difficult to know the difference between the two ahead of time, it’s important to know the intention of the email sender, if it’s just a casual message with a small winmail.dat file attached, it can usually be ignored, whereas if the sender is referring to an attached document which has shown up as a winmail.dat file instead of whatever they reference, you’d likely want to try and open it. In fact, Apple actually tells you to ignore winmail.dat files completely if they arrive in Mail app, which is often fair advice, but in some situations the winmail.dat file is an actual email attachment that has been misidentified, and thus need to be opened. 3 Ways to Open Winmail.dat Files on a Macĭo keep in mind if the winmail.dat file is simply a rich text version (TNEF) of the email that has been received, there is little reason to open it, as it would simply be a stylized version of the email you already received (much like the difference between TXT vs RTF files). Winmail.dat files are generated by Microsoft Exchange and Microsoft Outlook, Mac users typically find them arriving in emails sent from the Windows world and opened in Mail app, and the winmail.dat files can be one of two things rich text formatting for an email (for example, bolded text, or a stylized HTML email signature, a vcard), and less often, they can be an actual email attachment file which has been wrongly identified as winmail.dat, but is actually a Word document, calendar invite, Excel spreadsheet, RTF file, or some other legitimate file type that has been attached to the message. We’ll also explain what a winmail.dat file is and where they come from. We’ll show you several ways Mac users can open winmail.dat files attached to emails.