As a Yahoo! Delivers member (you asked to receive special offers via when you registered with us), you can take advantage of email forwarding and POP access. Each one is free, exclusively for Yahoo! Delivers members.
Yes! When I signed up for Yahoo! Mail I clicked on receieving additional offers via their sponsors which you might not have checked at that time! So I am a Yahoo! Delivers customer while you are not!
Sorry if the link does not works for you! It works for me though! Also you have to click on that link after logging in your Yahoo! Mail! Remember that!
While for an exisiting account...you can check all your Profile and personal options area but I am not sure whether you will be able to become a Yahoo! Delivers customer or not!
BTW To tell you I never saw a single mail from any sponsor in my life! I never know who are those sponsors! And you consider Spam from Yahoo! who spents millions of dollar in researching new methods for Spam Fighting!