sudo apt-get install libemail-outlook-message-perl libemail-sender-perl
from a command line. Use
msgconvert *.msg
to convert every file in a directory at once. MSGConvert will produce copies of your .msg-files with the suffix .msg.eml
N. Bell, and M. Garland. Proceedings of the Conference on High Performance Computing Networking, Storage and Analysis, page 18:1--18:11. New York, NY, USA, ACM, (2009)
M. Schleipen, and R. Drath. Proceedings of 14th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2009), Palma de Mallorca, Spain, page a.1--a.4. (2009)