Using Blind Carbon Copy (BCC) in Outlook Express
If you send emails to multiple recipients, it is important to use the Blind Carbon Copy (BCC) facility of your email program. Using BCC protects the privacy of your recipients and helps reduce spam. When you send an email to several people using the normal "To:" or "Cc;" fields, all of their email addresses are clearly displayed in the message. If the email is forwarded, the email addresses of all previous recipients may also be forwarded, as illustrated in the screenshot below.