Yahoo! Mail
Yahoo! Mail is an email service launched in 1997 through the American parent company Yahoo!. Yahoo Mail provides four different email plans: three for personal use (Basic, Plus, and Ad Free) and another for businesses. By December 2011, Yahoo! Mail had 281 million users, making it the third largest web-based email service in the world. Since 2015 its webmail client also supports managing non-Yahoo e-mail accounts.
Yahoo! Publisher Network
The Yahoo! Publisher Network (abbreviated YPN) was an advertising network launched on August 2, 2005 by Yahoo! and effectively closed on April 30, 2010. The service only accepted US-Based publishers. YPN provided cost per click contextual advertising as well as various tools and services to assist publishers in building and improving their websites.