answer:BCC [equal] blind carbon copy In the context of e-mail, blind carbon copy (abbreviated BCC and sometimes referred to as Blind Courtesy Copy) refers to the practice of sending a message to multiple recipients in such a way that what they receive does not contain the complete list of recipients. — IOW, people on the BCC list get a copy of your email, and no one knows who all is on the BCC. They do see the From: and To: and Cc: fields though! So, the problem is, for folks not familiar with the concept of BCC, they might hit the “Reply to All” button, and then “give themselves away” by announcing you sent an email covertly. I eschew use of that in favor of a separate fwd’d email to interested parties that I might not want on the original distrib.