Distinguish whether the body of a message is HTML or plain text?

[kostrykin]

To my knowledge, the body of an email can be HTML or plain text. Is it possible to distinguish whether the body of a message is HTML or plain text?

According to the docs https://ecederstrand.github.io/exchangelib/exchangelib/items/index.html#exchangelib.items.Item, items have the two attributes body and text_body. Unfortunately, these aren't documented. What is their difference?

[ecederstrand]

All classes refer to their MSDN documentation for further details. The docs you linked to has a reference to https://docs.microsoft.com/en-us/exchange/client-developer/web-service-reference/item where you can see a description of the two attributes. In exchangelib, the field returns objects of type exchangelib.properties.Body or exchangelib.properties.HTMLBody depending on what the server returns.