This repository contains a Python 3.9+ module for reading Microsoft Outlook .msg files and converting them to .eml format, which is the standard MIME format for email messages.

Install the dependencies with:

pip install -r requirements.txt

(You may need to create and activate a Python virtual environment first.)

Then either convert a single file by piping:

python outlookmsgfile.py < message.msg > message.eml

Or convert a set of files:

python outlookmsgfile.py *.msg

When passing filenames as command-line arguments, a new file with .eml appended to the filename is written out with the message in MIME format.

To use it in your application

import outlookmsgfile
eml = outlookmsgfile.load('my_email_sample.msg')

The load() function returns an EmailMessage instance.