History of Yahoo!
On March 8, 1997, Yahoo! acquired online communications company Four11. Four11's webmail service, Rocketmail, became Yahoo! Mail. Yahoo! also acquired ClassicGames.com and turned it into Yahoo! Games. Yahoo! then acquired direct marketing company Yoyodyne Entertainment, Inc. on October 12, 1998. In January 1999, Yahoo! acquired web hosting provider GeoCities. Another company Yahoo! took over was eGroups, which became Yahoo! Groups in June 2000. On March 8, 1998, Yahoo! launched Yahoo! Pager, an instant messaging service that was renamed Yahoo! Messenger a year later.
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.