If you look that low, the body isn't actually encrypted, just the parts of it that contain your data.
Answering the GP, that varies from one implementation to another. Most clients encrypt attachments, but it looks like this one extension only encrypts the textarea contents.
Right, I was responding to the "why would attachments be considered part of the body?", not describing whether or not the Google implementation actually did treat them that way.
Answering the GP, that varies from one implementation to another. Most clients encrypt attachments, but it looks like this one extension only encrypts the textarea contents.