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.
Brightmail
Founded as Bright Light Technologies, Inc. by a group of AOL expatriates led by Sunil Paul in 1998, with the promise to “end spam,” Bright Light raised $55 million in three rounds of venture capital led by Accel, TCV, and Symantec. After the second round of funding, Bright Light changed its name to Brightmail in summer 1999. Brightmail's services were mostly geared toward ISPs, whose subscribers were demanding a solution to spam or junk email, as it is estimated that fifty percent of all email is unwanted spam.