This is about printing a received or sent email;
http://www.msoutlook.info/question/5
What you are saying is when you are sending a message yourself. Then you
indeed can hide it by placing those addresses in the BCC field.
Back to the printing; if you only have to do it every once in a while, then
the workaround in the link I provided would suffice. If you need to do it
very often, then you might benefit with installing a printing addin. With
the addin below you can specify how many characters of the address field you
want to print;
http://addins.howto-outlook.com/sperry_printondemand
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