How to open winmail.dat files on Linux

The winmail.dat file is a container file format used by Microsoft Outlook to send attachments in richtext 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 --save-body -f winmail.dat

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

For more information use

man tnef