How to fetch the conversation id from a .msg file using MAPIMessage

I’m trying to parse a .msg file. How do I get the conversation id?
I’m using org.apache.poi.hsmf.MAPIMessage

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2 Answer(s)

The structure of the MSG file format is described in the MSDN library, see [MS-OXMSG]: Outlook Item (.msg) File Format.

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It is stored in the 0x0F030102 property – you can see if it is set in a particular MSG file in OutlookSpy (click OpenIMsgOnIStg button).

Answered on July 16, 2020.
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