There have been some massive threads that are now on a completely
non-related subject in their e-mails..
Consider that most mobile devices/clients can hide new messages that are
part of a thread, until you actually go into the thread of messages.
I've caught a couple of critical from the ground communications that
have come in that i've forwarded directly to the proper people... but I
cant capture everything (today was crazyday, could not be a list mom today)
Consider that if you have something specific you want people to look at
/ consider that the e-mail subject should be a new unique title!