Blind carbon copy (abbreviated Bcc) allows the sender of a message to conceal the person entered in the Bcc field from the other recipients. This concept originally applied to paper correspondence and now also applies to email.
In some circumstances, the typist creating a paper correspondence must ensure that multiple recipients of such a document do not see the names of other recipients. To achieve this, the typist can:
With email, recipients of a message are specified using addresses in any of these three fields:
It is common practice to use the Bcc: field when addressing a very long list of recipients, or a list of recipients who should not (necessarily) know each other, e.g. in mailing lists.