Email Auto Populate

I'm terrified of the auto populate function in email addresses. I've come too close to sending out sensitive material to the wrong people on many occasions, and once I even made the mistake and sent an email with photos of my girlfriend to my company's entire marketing department. That incident culminated in an rather embarrassing day in the office with lots of nice "congratulations" emails, but I know more of the large marketing staff thought I was a serious weirdo. The only mass emails you're allowed to send at work are pictures of your newborn kids, which is really unfair to those of us who don't have kids.