Rippleffect, which was reappointed to the digital account after its seven-year contract with Everton FC expired, will be responsible for the ongoing development, design and build of Evertonfc.com and the creation of new ways for the club to interact with its fans.
The club said digital platforms are big revenue drivers, helping to grow tickets, merchandise, hospitality and advertising sales. It claims to have 88% of its fans visiting the site.
Everton aims to take advantage of emerging digital channels, as well as mobile and tablet technology.
Mark Rowan, head of media and communications at Everton FC, said: "The digital environment has become the most important way in which we communicate with our fans."
In November last year, , in a three-year sponsorship deal worth £12m.