Verb (present tense is email siege) The act of seemingly everyone under God's green earth emailing one email in a short period of time (to the max a week) and completely stuffing their inbox, often with useless junk mail.
Person A: Holy Crap!
Person B: What?
Person A: I was offline for like 2 days and I have 112 emails!
Person B: Enjoy being email sieged. It happened to me last week.