Personal emails creep in sometimes too: “Are you coming for lunch?”
We have to make sure we capture what the discussion was about. You don't have to keep the emails if you go back and make a memo out of it that says, “We discussed this. This is what was taken into consideration, and this is the decision that was made.” The email is just a conversation. It's like having a meeting. You don't record the meeting; you record minutes at the end.
I understand what you're saying. Somebody could be worried about erasing something, but, again, you have to look at the chain and see what the corporate value is. Do you have to keep all of your emails about everything? No. There are things that would lead to somebody understanding a decision or why there's a policy change. If I see that four people discussed it, and you have the chain kept by at least one person, I don't see how I could be mad at the other three for doing proper management of information.