Add Bcc or Cc Recipients in Outlook.com Messages
To add Cc or Bcc recipients to an email you are composing on Outlook.com:
Select New message. In the new message, select Bcc to add the Bcc field to the message header. Or, select Cc to add the Cc field. Enter recipients’ email addresses in the appropriate carbon copy fields. The email will be copied or blind copied to those you indicated.
