Specify the recipients for the copy and blind copy of the email in the fields CC and BCC. The fields CC and BCC are filled out and edited similarly to the To field.
Copy
If required, in addition to the main recipients, send the email to other recipients, specify their email addresses in the CC field. Recipients listed in the CC field receive the email for information and, according to the sender's intention, are not the main participants in the thread.
Blind carbon copy
The recipients specified in the BCC field will also receive the sent email, but the other participants in the thread (recipients listed in the To and CC fields) will not know about sending the email to this recipient, since recipients of a blind carbon copy are not displayed in the list of email addresses. Often, blind carbon copies are used in mass mailings so that your address book cannot be known by all other recipients.
The fields CC and BCC can be hidden if you click Copies
in the right part of the address block (the fields are expanded by default).