An individual who approaches someone's desk or workstation in a work environment almost immediately after sending them an email, usually to confirm that the email has been received.
Bill: I just sent you an email. Did you get it?
Mike: Probably, I haven't checked.
Bill: Can you check?
Mike: Uh yeah, looks like I got it.
Mike: My immediate thoughts are you're an email courier and a douchebag.
Falling victim to unnecessary or excessive use of your email address in the CC field when receiving email at work, usually resulting in voluminous discussion threads in your inbox having little or nothing to do with your job.
Mike: Holy shit! These spammers at work sent me 20 emails in 5 minutes related to replacing the empty paper towel spool in the lunch room.
Erich: What? Why 20 emails?
Mike: They included me in the CC field and did a Reply to All while they discussed who's responsibility it should be to change it. I'm getting CC Sick!