Chart showing: Most Used Email Clients Worldwide

Most Used Email Clients Worldwide

With billions of users worldwide and more than 361.6 billion emails being exchanged every day, email has come a long way since it was invented in 1971.

Today, people all over the world have a host of email clients to choose from.

Email client market share breakdown

Email client

Market share (as of March 2024)

1. Apple


2. Gmail


3. Outlook


4. Yahoo! Mail


5. Google Android




7. Thunderbird


8. Samsung Mail




10. GMX


According to the latest data, as of March 2024, the two most used email clients in the world are Apple and Gmail. At 56.32%, Apple has the majority of the email client market share. It’s used by more than half of the world’s email users to send and receive emails.

Apple’s latest reported market share marks a 2.72 percentage point decrease from a year ago in March 2023, when the figure was 59.04%. Over the past 12 months, Apple’s highest market share came in at 66.83% in November 2023. 

Apple’s market share started 2024 with a 2.6 percentage point dip from 58.07% in December 2023 to 55.47% in January. There was a fractional rise to 55.64% in February, before another marginal increase took it to its current 56.32%.

Gmail ranks in second place, after Apple. Currently, the Gmail market share is at 30.57%, rising by 2.61 percentage points from 27.96% the previous year. In other words, just under one in three email users in the world currently use Gmail, which is owned by Google. Gmail’s email client market share fell to 22.82% in November 2023, the same time Apple’s peaked. 

Even though it’s the second-most popular email client, Gmail’s market share is still a significant 25.75 percentage points behind Apple’s. But together, Apple and Gmail make up a whopping 86.89% of the total email client market share. This means that more than four out of every five email users use either Apple or Gmail.

The third-most popular email client is Microsoft’s Outlook. It’s used by 4.06% of email users worldwide. Fourth on the list of the most used email clients is Yahoo! Mail, which has a market share of 2.45%. This is followed by Google Android, with 1.71%, and, with 0.63%.

As of March 2024, the seventh- and eighth-most popular email clients and their market shares are Thunderbird, with 0.22%, and Samsung Mail, with 0.11%. and GMX complete the list, with shares of 0.09% and 0.08%, respectively.

        Want to learn more?