How to open winmail.dat files on Ubuntu and Debian Linux

The winmail.dat file is a container file format used by Microsoft Outlook to send attachments in rich-text formatted emails. To open winmail.dat on Linux, use the tnef utility.

Installation

sudo apt-get install tnef

Usage

Open a shell window, navigate to the directory where the winmail.dat file is saved,  then execute the command:

tnef winmail.dat

to extract all files that are stored in the winmail.dat into the current directory.

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