Yahoo Mail

yahoo mail

One of Yahoo's most successful purchases was a company called Four11. Yahoo bought the webmail service for $92 million in March 1997, and it eventually became the foundation for Yahoo Mail.

Yahoo Mail has just shy of 300 million users, making it the third-largest mail service, behind Google's Gmail and Microsoft's (MSFT) Outlook.

First published July 25, 2016: 9:18 AM ET

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