Can't find that in any company manual.

I suppose the ewr management pilot that released the email adresses in question would be more knowledgeable about the privacy rules of the airline, and would be perhaps held to a higher standard that mere "employees."

I'll bet soon that starfleet-starcommand will get their new designated "bad boy" to put out a pilot memo telling pilots......"if you bone-head Chief Pilot sends you an email with a couple hundred other employee email adresses please disregard that and delete it, and by all means don't reply to all, or email anyone else on the roster, as this will be punnishible up to and includng terminatio."

I am laughing at the lunacy here...............management incompetence strikes again.