"Idiot Mail" or the endless amount of ridiculous and inane email one receives from idiots all day long, especially at work or in a corporate context.
"I just got a bunch of I-mails from that idiot in marketing" or "why does corporate insist on I-mailing us this crap all day long?"
Abbreviation of "Internal mail". The often used method of communication in offices around the globe.
Worker 1: "I need to see it by the end of the week."
Worker 2: "I'll put a copy in the i-mail."