The list of BCC’d recipients is not included with emails, so there is no way to determine to whom the email was sent.

Related Posts

• How Do I Hide the Email Addresses I’m Sending to In a Message? - It's possible to send email to someone without having their email address show up on the To: or Cc: lines by using Blind Carbon Copy, or Bcc.
• How Do I View the List of BCC’ed Recipients on an Email I’ve Received? - The list of BCC'ed recipients is not included with emails, so there is no way of determining if or who else the email was sent to.
• Why Does Email with a Lot of BCC’ed Recipients Bounce? - BCC is good for many things. Sending to many people at once isn't really one of them.
• Does Bounced Email Mean All the Recipients Didn’t Get My Message? - When an email message comes back to you because of a problem, exactly who did or did not get the message depends on the error and where it happened.