Google CEO Sundar Pichai shared the news with investors and media, adding that Gmail hit the milestone last quarter. To recall, Gmail had 900 million active users as of May 2015.

Launched in beta in 2004, Gmail has slowly grown to become a household name, with millions of users using it for their personal use, and thousands of businesses relying on Google's service for email. Google removed the beta label from its Gmail client in 2009. Pichai says that there has been a rapid mobile growth in the usage of Gmail.

Over the years, Google has been working on improving the email experience for users. Its filtering has gotten better, and Gmail also sorts the spam, marketing, promotions, and personal emails quite efficiently. Gmail has also become elegant to look at, embracing Material Design, the new design language the company announced with Android Lollipop in 2014.


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