Which part of the email allows you to send a copy of the email where the other recipients are not visible to the receiver? cc To BCC Attachment

The part of the email that allows you to send a copy of the email where the other recipients are not visible to the receiver is the "BCC" (blind carbon copy) field. When you use BCC, the recipients you include in the BCC field will receive a copy of the email, but their addresses will not be visible to the original recipients. This allows for privacy and confidentiality when sharing information with multiple people.