What is a .TNEF file?
A .TNEF file is a type of email attachment that uses Microsoft's Transport Neutral Encapsulation Format. This format is often used by Microsoft Outlook and Microsoft Exchange Server. When these programs send emails that are formatted in rich text or contain attachments, they might save these attachments as .TNEF files. These files are sometimes named Winmail.dat.
The purpose of using the TNEF format is to maintain the formatting and the integrity of the attachments across different email systems that might not otherwise support rich formatting.
To open a .TNEF file, you can use several programs: 1. **Microsoft Outlook 365** - This is a popular email client from Microsoft that can open and handle .TNEF files directly. 2. **KMail** - An email client for Linux systems that can open these files with the help of an additional tool called KTNEF. 3. **KTNEF** - This is a tool specifically designed to help KMail users open and view the contents of TNEF files. 4. **TNEF's Enough** - This is a program available for Mac and iOS devices that allows users to open and extract the contents of .TNEF files. 5. **iOS Mail App** - The default mail application on iOS devices can also handle .TNEF files, allowing you to view them on iPhones and iPads.
It's important to note that the program tnef2win, which was used to open these files, has been discontinued and is no longer available for use.
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