It's A G-Thing: 15 Google Game-Changers Over 15 Years


Gmail

Gmail was first launched on April Fools' Day in 2004 on an invite-only basis. It was unveiled to consumers and enterprise in 2009 after its beta period.

While it entered the market with many other free email competitions, Gmail has done incredibly well. Just four years later, there are more than 425 million Gmail users.