Email Marketing : Yahoo Web Mail still has potential Users for consumer market

While analyzing the web mail service provider, understand that 60 to 65% of the potential users are drive by Yahoo (in consumer segment). Even though Gmail is No. 1, but the User potential to purchase is still with yahoo. For Mailer Campaign, Yahoo mailer compataibility should not be negated. Hope, this is good news for Yahoo (Particularly Marissa Mayer:)