'Bcc' field (Blind Carbon copy), addresses of others who are to receive the message, tough the content of the message may not be directed at them. May be empty. You can use MailBox to represent single mailbox, or MailGroup to represent group of email addresses.

public IList<MailAddress> Bcc { get; private set; }

Public Property Bcc As IList(Of MailAddress)
	Get
	Private Set

public:
property IList<MailAddress^>^ Bcc {
	IList<MailAddress^>^ get ();
	private: void set (IList<MailAddress^>^ value);
}