The mail is basically unparsable (hint: you can use a sane mailer even with exchange servers :)).
Either way we need to get rid of buffer_heads, and another aop that is entirely caller specific is unaceptable. That being said your idea doesn't sounds unreasonable, but will require a bit more work and has no real short-term need. So let's revisit the idea once you have patches to post and move forward with the more urgent needs for now.
