How Many Email Users Are There?

Worldwide Email Statistics

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According to a Radicati Group study from January 2017, there will be more than 3.7 billion email users worldwide by the end of the year. That means that nearly 54% of the entire planet is currently using email.

To visualize a comparison growth rate, the same group reported about 1.9 billion worldwide users in May of 2009 and projects that that number will reach 4.1 billion by 2021.

Note: Since the group's estimates have been a bit high in the past, it's possible that the real number will fall short of their projections.

How Many Email Accounts Are There?

Since some users have multiple email accounts (1.70 on average), there are more email accounts than there are users.

The mailboxes commanded by these users were calculated to number around 4.4 billion in 2015, which is up from 2.9 billion in 2010 and ~3.3 billion in 2012.

How Many Gmail Users Are There?

Google had over 1 billion monthly active users in early 2016. In May of 2015, they had 900 million users worldwide, which was even higher than their 2012 report of around 426 million monthly active users.

Look at this chart for a visual trend of Gmail users increasing over the years.

How Many Outlook.com Users Are There?

In early 2017, Outlook.com had a reported 400 million users. However, that number hasn't changed as drastically as Gmail's statistics. In July 2011, Microsoft was said to reach 360 million active users for its Windows Live Hotmail service worldwide.

How Many Corporate Users Are There?

The Radicati Group counts the 3.7 billion email users in January 2017 as both consumer and corporate users. However, because it isn't clear how the email accounts are differentiated between consumer and business users, it's hard to measure the accuracy of the statistic.

In 2010, the Radicati Group reported 730 million business email inboxes worldwide, which at the time, was 25% of all email accounts.

How Many Emails Are Sent Each Day?

Email users send hundreds of billions of messages every single day.

See ​​how many emails are sent every day for updated statistics.