Earlier quoted context omitted.
It only includes the headers of the last email in the thread. But that doesn't guarantee that the person forwarding the email hasn't changed what someone else wrote in the quoted reply text. To me that's actually a serious security issue, and in the long term is more serious than the OAuth thing (which I'm confident that Google will eventually fix). If I'm wrong and it's possible to do then by all means I'll do it th…
I don't believe that is correct. If you check the email source, it includes all the emails with their headers.
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