Agreeing with your last comment. I'm very emotional too and it leads me to be extremely irrational when my temper flares, so I'm learning to simply walk away from the keyboard until I'm calm enough to write a proper response. If an email/PM is important enough, I will sometimes write something quick back like "I will give you a proper response shortly, I apologize for the inconvenience" and then wait until I've calmed to write out what I want to say.