Create an Address Book Entry for "Undisclosed recipients"
To make mailing "undisclosed recipients" easier, let's first set up a special address book entry for that purpose:
· Select Tools | Address Book (or Window | Address Book) from the menu in Mozilla Thunderbird.
· Click New Card.
· Type "Undisclosed" under First:.
· Enter "recipients" under Last:.
· Now type your own email address under Email:.
· Click OK.
Send an Email to Undisclosed Recipients in Mozilla Thunderbird
To compose and send a message to undisclosed recipients in Mozilla Thunderbird:
· Begin with a new message.
· Click Contacts in the message's toolbar.
· Highlight "Undisclosed recipients".
· Click Add to To:.
· Highlight all other desired recipients in the Contacts pane.
· Drag and drop them to the second address field.
· Click on that second address field's To:.
· Select Bcc: from the drop-down menu.
· Add additional recipients (not found in your address book) to the Bcc: field.
· Separate them from the existing contacts and from each other with commas.
· Of course, you can also use Mozilla Thunderbird address book groups to add multiple recipients in one go.
Compose your message and eventually send it.