As for keeping emails, legally they can be used to prove various things, from promises for items, to harassment, to stalking. What you perceive to be non incremaniting and positive can be twisted and taking as harshly as they choose.
I'm currently in the middle of a war because my others choose to perceive an email that wasn't rude or meanfrom mine or my L perspective but according to my MIL actions I'm going to pay. All because I informed my x that I would not accept giving up my rights to our house. And informed her of my intent of keeping it, but would negotiate if presented with a decent offer.
