How to get the original body type of a message without getting the best body of the message using EWS.

The PidTagNativeBody property (Property ID, 0x1016; Data Type 0x0003 (PtypInteger32)) should reflect the format of the body when a normal email message arrives in the inbox (not counting calendar messages such as meeting requests, etc.).  If the message is signed, you would need to dig into it to figure out what it is.                  …

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