I just checked and you are correct: It seems Visual Studio doesn't handle obfuscation too well. Something must have changed recently as I don't remember it having such problems before.
What is interesting public properties/methods are not obfuscated in any way, and if you add a specific property to watch e.g. "mail.Subject" it shows correct value.
Fortunately I can see, that InteliSense is working with no problem. Right now I can only point you to the documentation, where you can find all class/properties/methods.
We'll try to improve this in the next release, thanks for the report!