Career-limiting email

We have a term here (and probably where you work, too, although you may not know it): Career-limiting email. It is any piece of mail that you figure will probably get you either fired or forever pigeonholed as someone the upper-ups find too bothersome to promote.

I'm on a roll today ... I used to try to keep it down to one per week, but it is only Monday and I've written at least five.