Extracts emails and attachments saved in Microsoft Outlook's .msg files
Extracts emails and attachments saved in Microsoft Outlook’s .msg files
The python package extract_msg automates the extraction of key email data (from, to, cc, date, subject, body) and the email’s attachments.
To use it as a command-line script:
python -m extract_msg example.msg
This will produce a new folder named according to the date, time and subject of the message (for example “2013-07-24_0915 Example”). The email itself can be found inside the new folder along with the attachments.
The script uses Philippe Lagadec’s Python module that reads Microsoft OLE2 files (also called Structured Storage, Compound File Binary Format or Compound Document File Format). This is the underlying format of Outlook’s .msg files. This library currently supports up to Python 2.7 and 3.4.
The script was built using Peter Fiskerstrand’s documentation of the .msg format. Redemption’s discussion of the different property types used within Extended MAPI was also useful. For future reference, I note that Microsoft have opened up their documentation of the file format.
#########REWRITE COMMAND LINE USAGE############# Currently, the README is in the process of being redone. For now, please refer to the usage information provided from the program’s help dialog:
usage: extract_msg [-h] [--use-content-id] [--dev] [--validate] [--json] [--file-logging] [--verbose] [--log LOG] [--config CONFIG_PATH] [--out OUT_PATH] [--use-filename] msg [msg ...] extract_msg: Extracts emails and attachments saved in Microsoft Outlook's .msg files. https://github.com/mattgwwalker/msg-extractor positional arguments: msg An msg file to be parsed optional arguments: -h, --help show this help message and exit --use-content-id, --cid Save attachments by their Content ID, if they have one. Useful when working with the HTML body. --dev Changes to use developer mode. Automatically enables the --verbose flag. Takes precedence over the --validate flag. --validate Turns on file validation mode. Turns off regular file output. --json Changes to write output files as json. --file-logging Enables file logging. Implies --verbose --verbose Turns on console logging. --log LOG Set the path to write the file log to. --config CONFIG_PATH Set the path to load the logging config from. --out OUT_PATH Set the folder to use for the program output. (Default: Current directory) --use-filename Sets whether the name of each output is based on the msg filename.
To use this in your own script, start by using:
From there, initialize an instance of the Message class:
msg = extract_msg.Message("path/to/msg/file.msg")
Alternatively, if you wish to send a msg binary string instead of a file to the ExtractMsg.Message Method:
msg_raw = b'\xd0\xcf\x11\xe0\xa1\xb1\x1a\xe1\x00 ... \x00\x00\x00' msg = extract_msg.Message(msg_raw)
If you want to override the default attachment class and use one of your own, simply change the code to:
msg = extract_msg.Message("path/to/msg/file.msg", attachmentClass = CustomAttachmentClass)
where CustomAttachmentClass is your custom class.
#TODO: Finish this section
If you have any questions feel free to contact me, Matthew Walker, at mattgwwalker at gmail.com. NOTE: Due to time constraints, The Elemental of Creation has been added as a contributor to help manage the project. As such, it may be helpful to send emails to firstname.lastname@example.org as well.
If you have issues, it would be best to get help for them by opening a new github issue.
Should you encounter an error that has not already been reported, please do the following when reporting it: * Make sure you are using the latest version of extract_msg. * State your Python version. * Include the code, if any, that you used. * Include a copy of the traceback.
You can install using pip:
pip install extract-msg
pip install git+https://github.com/mattgwwalker/msg-extractor
or you can include this in your list of python dependencies with:
# setup.py setup( ... dependency_links=['https://github.com/mattgwwalker/msg-extractor/zipball/master'], )
Here is a list of things that are currently on our todo list:
- Tests (ie. unittest)
- Finish writing a usage guide
- Improve the intelligence of the saving functions
- Provide a way to save attachments and messages into a custom location under a custom name
- Implement better property handling that will convert each type into a python equivalent if possible
- Implement handling of named properties
- Improve README
- Create a wiki for advanced usage information
Matthew Walker - Original developer and owner
Ken Peterson (The Elemental of Creation) - Principle programmer, manager, and msg file “expert”
JP Bourget - Senior programmer, readability and organization expert, secondary manager
Philippe Lagadec - Python OleFile module developer
Joel Kaufman - First implementations of the json and filename flags
Dean Malmgren - First implementation of the setup.py script
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