The process by which an email, which you are copied on, has replicated each of its replies, separated the thread into several identical threads, each containing in its own new information from the others copied, without you knowing what the fuck is going on anymore
Hey I was looking into that Baggage that got lost and I found that it wasn't in our storage facility.
Yeah, everyone already knew that because Someone else found it found it like an hour ago, I guess you weren't on that thread...
I think urban dictionary should have a definition about "email mitosis" to describe that phenomenon.