The World's Most Popular Email Clients
Gmail turns 15
With 1.5 billion users, Gmail has grown into one of Google’s most successful products and one of the most popular email clients in the world. According to data published by email analytics firm Litmus, Gmail is only beaten by Apple’s native iPhone email app in terms of usage. According to Litmus’ analysis of 834 million email opens worldwide, 26 percent of those emails were opened within Gmail, while 28 percent were opened in the iPhone email client.
This chart shows the top 10 email clients worldwide based on the share of email opens in March 2019.