Here is a quick example of how to use BCC in Yahoo Mail Classic.The idea is similar in many different email programs.
Easy Two Step Process
There are two simple steps to help your recipients avoid getting flooded with spam.
1.) Enable the Bcc feature
2.) Use "Bcc:" instead of "To:" whenever sending mail to multiple recipients.
Screen Shots
Step 1.) Find and Enable the Bcc feature
Step 2.) Use Bcc:
That's all there is to it! You'll be saving your friends from tons of unwanted emails by keeping their email addresses private.
For more details on why BCC is important, please see this article:
http://systemnotesorg.blogspot.com/2008/02/bcc-howto.html
