Send an Email to Undisclosed Recipients in Mailbird

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You can send an email without revealing any of the recipient’s addresses by emailing “Undisclosed recipients” in Mailbird. When sending a message to a group of recipients, revealing their email addresses is an easy thing to do: everybody can take a look at the To: or Cc: field, and encounter all the addresses.

Guarding Email Addresses

Fortunately, guarding those same addresses is also just as easy in Mailbird. Only you--the sender--can see what recipients' addresses are hidden in the Bcc: field. Guard the address in the To: field with "Undisclosed recipients", and you have effectively hidden all addresses—to reveal none.

Send an Email to Undisclosed Recipients in Mailbird

To address an email to “Undisclosed recipients” in Mailbird and send it to any number of addresses without revealing any email addresses. Make sure you have an address book entry set up for “Undisclosed recipients” in Mailbird:

  1. Start with a new message or reply.
  2. Begin typing “undisclosed” in the To: field.
  3. Select Undisclosed recipients <> from the auto-complete list.
  4. Click the rightward-pointed triangle () in front of To:.
  5. Add all recipients you want to get a copy of the message under Bcc:.
    1. Separate recipients with commas (,).
  6. Compose the message and, when you're finished, click Send or press Ctrl-Enter.

Create an “Undisclosed recipients” Contact in Mailbird

To add an address book entry for “Undisclosed recipients” in Mailbird:

  1. Make sure the “Contacts” app is enabled in Mailbird:
    1. Go to Apps in the Mailbird sidebar.
    2. Make sure ON is selected for Contacts.
  2. Select Contacts in the Mailbird sidebar.
  3. Click the Add button ().
  4. Type “Undisclosed” under First name.
  5. Enter “recipients” under Last name.
  6. Click Add email under Email.
  7. Enter your own email address under Email.