I presume you want to email everybody in your address book
without disclosing all the email addresses..??
Using Outlook Express, I sent an email to myself, but
Bcc'd it to many people in my address book. I did use a second email address - although not necessary really - and changed my name to read as "Everybody" or "All" or something similar. I then clicked on all of the names I wished to include.
Seemed to work ok - nobody mentioned otherwise, and the email which I received only showed "Everybody" as the recipient (rather than each individual name).
I'm sure there are better and more efficient methods, however, it was sufficient for me.
Might be worth a try.