In Cc, we keep everyone and mail it when we want everyone to know about it.

Everyone should also know that who knows this mail.

Whereas in Bcc, we keep people when we do not want everyone to know who has information about that mail.

Cc is a transparent mail that you have done whereas in Bcc mail everything is hidden.

In Cc, people know that to whom this mail has gone apart from them.

Whereas in Bcc people do not know to whom this mail has gone.

In Cc, the reply of each member is visible to everyone else.

Whereas in Bcc, only the sender can see the reply of anyone and the rest are not aware of it.

When you want to send the same mail to many people.

Bcc is also called “Blind Carbon Copy”.

We use it when we mail everyone together but we do not want everyone to know who else is included in the list of these mails.

Cc stands for "Carbon Copy or Carbon Copy".

In Cc, we keep everyone and mail it when we want everyone to know about it.