Sometimes a group e-mail is the easiest way to get information out, whether it has to do with your business or your personal life. You may plan to send a mass e-mail, but you don't want each recipient to see the other addresses in the email. In that case, you want to hide the addresses or send the email to "Undisclosed Recipients." You can do this in Windows Live Mail by creating an entry in your address book.
Log on to your Windows Live Mail account.
Select "Tools" and then "Windows Contacts" from the menu.
Select "New Contact."
Type "Undisclosed" in the "First" field and "Recipients" in the "Last" field. You can also enter something that will be more familiar to recipients so they don't think your e-mail is spam. A possible option includes your own first and last name. This is the name recipients will see.
Enter your e-mail address in the "E-mail" field and click "OK."
Sign in to your Windows Live account and start a new message.
Click on "To:" and select the "Undisclosed Recipients" entry you created in Section 1. Click "To" again.
Click "Bcc:," which stands for "Blind Carbon Copy." Select "View" and then "All Headers" from the menu if you do not see the "Bcc:" option.
Click "OK" and select any recipients you want to receive the email. If you are entering each e-mail address manually, separate each recipient's address with a semicolon.
Compose and send your message. Any addresses under the "Bcc:" field will be hidden from other recipients.