If you want to send an email to multiple recipients at once, you can enter all recipient addresses, separated by commas (“,”), in one of the following fields:
"To"
"Carbon Copy" (Cc)
"Blind Carbon Copy" (Bcc).
In all cases, all addresses entered in these fields receive a copy of the message without retyping or re-creating it. But what is the difference between a carbon copy and a blind carbon copy?