Four11
Four11 was an early internet directory and email-services company. Its RocketMail service became the basis of Yahoo Mail.
Contents5 sections
Key facts
1994Company founded
Michael Santullo and Larry Drebes founded Four11.[1]
Products: Directories and RocketMail
Its products included telephone, email, and internet-phone directories and the free webmail service RocketMail.[1]
October 8, 1997Acquisition agreement and Yahoo Mail
YahooYahooYahoo is an internet brand founded by Jerry Yang and David Filo in 1994, with email, search, news, finance, sports, and advertising businesses. It developed from a web directory into a portal, underwent major acquisitions and security incidents, and sold its operating business in 2017, when the original listed company became Altaba. Apollo-managed funds acquired the brand’s operating business in 2021. Yahoo launched the AI answer service Scout in 2026.Open the full entry announced the acquisition agreement and launched Yahoo Mail, based on RocketMail.[1]
October 20, 1997Transaction completed
Yahoo completed its acquisition of Four11.[2]