How to Send an Email to Undisclosed Recipients in Outlook

Keep your email recipient list secret

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When you send emails, if you send a message to a group of friends or business acquaintances—some of whom are unknown to one another—by placing all the recipients in the Cc field, you effectively share private email addresses with strangers. Also, having a long Cc list doesn't look good.

In Outlook, create a contact just for addressing your email to "Undisclosed Recipients" to ease the pain of repetitive typing and to avoid errors.


Create an Outlook Contact for 'Undisclosed Recipients'

To add a new contact to Outlook for addressing "Undisclosed Recipients:"

  1. Click New Items in Outlook email.
  2. Select Contact from the menu that appears. You can also use the keyboard shortcut Ctrl-Shift-C to create a new contact.
  3. Enter "Undisclosed Recipients" (without the quotation marks) under Full Name.
  4. Enter your own email address under E-mail.
  5. Click Save & Close.

Create an Outlook Contact for 'Undisclosed Recipients' in Outlook 2013

To add an address book entry for "Undisclosed Recipients" in Outlook 2013:

  1. Click the down arrow of the New button.
  2. Select Contact.
  3. Type "Undisclosed Recipients" under Full Name.
  4. Type your email address under E-mail.
  5. Click Save and Close.

If you already have an existing address book entry bearing your email address, make sure Add this as a new contact anyway is checked in the Duplicate Contact Detected dialog and click OK.

Send an Email to 'Undisclosed Recipients' in Outlook

To send a message to multiple and hidden recipients with "Undisclosed Recipients" in the To field from Outlook:recipients with "Undisclosed Recipients" in the To field from Outlook:

  1. Confirm you have an address book entry for "Undisclosed recipients."
  1. Start a new email message in Outlook.
  2. Click the To button.
  3. Type "U" and select Undisclosed recipients from the auto-complete list.
  4. Click Options > Bcc Bcc to show the Bcc field if you don't see it. Click the Bcc button and then select all the people in your address book to whom you want to send the message.
  5. Click OK.
  6. Add any additional recipients' email addresses to the Bcc field. Separate the addresses with semicolons.
  7. Compose the message and click Send.

(Tested with Outlook 2003, Outlook 2007, Outlook 2013 and Outlook 2016)