Documentation for Outlook specific attachment types?

%3CLINGO-SUB%20id%3D%22lingo-sub-1568725%22%20slang%3D%22en-US%22%3EDocumentation%20for%20Outlook%20specific%20attachment%20types%3F%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1568725%22%20slang%3D%22en-US%22%3E%3CP%3EI'm%20a%20developer%20working%20on%20a%20Python%20project%20called%20%22msg%20extractor%22%20that%20is%20able%20to%20open%20and%20understand%20a%20good%20portion%20of%20the%20.msg%20file%20format%2C%20the%20format%20the%20Outlook%20saves%20messages%20in.%20While%20trying%20to%20expand%20it's%20capabilities%2C%20I%20came%20across%20a%20specific%20type%20of%20attachment%20only%20noted%20in%20the%20documentation%20I%20could%20find%20as%20being%20in%20%22Application%20specific%20format%22%20(Property%20PidTagAttachMethod%2C%20value%20afStorage).%20While%20I%20can't%20reasonably%20add%20support%20for%20formats%20from%20every%20singly%20email%20program%2C%20I%20would%20like%20to%20be%20able%20to%20add%20support%20for%20any%20attachments%20that%20Outlook%20might%20create.%20As%20such%2C%20I%20was%20wondering%20if%20documentation%20on%20the%20types%20of%20attachments%20Outlook%20creates%20has%20been%20published%20anywhere%3F%3C%2FP%3E%3CP%3EThe%20specific%20attachment%20that%20I%20keep%20finding%20has%20to%20do%20with%20having%20a%20signature%20that%20contains%20an%20image.%3C%2FP%3E%3CP%3EThank%20you%20for%20your%20time.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ENote%3A%20I%20already%20tried%20to%20ask%20this%20question%20in%20a%20different%20Microsoft%20community..%20After%20a%20chat%20with%20Microsoft%20support%2C%20I%20was%20forwarded%20to%20this%20community.%20You%20can%20see%20the%20original%20post%20here%3A%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Fsocial.msdn.microsoft.com%2FForums%2Fen-US%2F23a59f78-44aa-4346-9424-e17b2785254b%2Fdocumentation-for-outlook-specific-attachment-types%3Fforum%3Doutlookdev%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%3Ehttps%3A%2F%2Fsocial.msdn.microsoft.com%2FForums%2Fen-US%2F23a59f78-44aa-4346-9424-e17b2785254b%2Fdocumentation-for-outlook-specific-attachment-types%3Fforum%3Doutlookdev%3C%2FA%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E
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I'm a developer working on a Python project called "msg extractor" that is able to open and understand a good portion of the .msg file format, the format the Outlook saves messages in. While trying to expand it's capabilities, I came across a specific type of attachment only noted in the documentation I could find as being in "Application specific format" (Property PidTagAttachMethod, value afStorage). While I can't reasonably add support for formats from every singly email program, I would like to be able to add support for any attachments that Outlook might create. As such, I was wondering if documentation on the types of attachments Outlook creates has been published anywhere?

The specific attachment that I keep finding has to do with having a signature that contains an image.

Thank you for your time.

 

Note: I already tried to ask this question in a different Microsoft community.. After a chat with Microsoft support, I was forwarded to this community. You can see the original post here: https://social.msdn.microsoft.com/Forums/en-US/23a59f78-44aa-4346-9424-e17b2785254b/documentation-fo...

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