For "business", I usually fax a copy of the email IF it is important. Why not just fax then? Good question. I do find myself faxing more because I know they will get it. Yes, everyone in their office will probably read it before it get to the sender, but when it really it is important - the more eyes that see it the better.
One company that I deal with has a office policy about emailing - snail mail a copy. Yea, it seems silly but CYA when it is business stuff.
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