Despite the growth and prominence of mobile messengers and chat apps, e-mail is an integral part of daily online life. In 2025, the number of global e-mail users amounted to **** billion and is set to grow to **** billion users in 2028.
Global e-mail audiences
In 2023, approximately *** billion e-mails were sent and received every day worldwide. This figure is projected to increase to over *** billion daily e-mails in 2027. As of July 2022, Apple Mail Privacy accounted for over half of the e-mail opens, while mobile use of e-mails saw a significant decrease in their market shares. Apple MPP e-mail app was the most popular e-mail client, accounting for ** percent of e-mail opens. Gmail, the free e-mail service owned by Google, was ranked second with a ** percent open share.
Malicious mail
Many online users use e-mails for website and newsletter signups and brace themselves for the inevitable flood of spam and marketing communications. Whereas most unwanted e-mails are annoying yet ultimately benign, consumers are right to be wary of malicious e-mail that can be used to compromise their digital accounts and devices. In 2023, ** percent of fraud reports in the United States related to cases in which victims were contacted via e-mail.
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The Radicati Group. (January 2, 2025). Number of e-mail users worldwide from 2018 to 2028 (in millions) [Graph]. In Statista. Retrieved October 28, 2025, from https://www.statista.com/statistics/255080/number-of-e-mail-users-worldwide/
The Radicati Group. "Number of e-mail users worldwide from 2018 to 2028 (in millions)." Chart. January 2, 2025. Statista. Accessed October 28, 2025. https://www.statista.com/statistics/255080/number-of-e-mail-users-worldwide/
The Radicati Group. (2025). Number of e-mail users worldwide from 2018 to 2028 (in millions). Statista. Statista Inc.. Accessed: October 28, 2025. https://www.statista.com/statistics/255080/number-of-e-mail-users-worldwide/
The Radicati Group. "Number of E-mail Users Worldwide from 2018 to 2028 (in Millions)." Statista, Statista Inc., 2 Jan 2025, https://www.statista.com/statistics/255080/number-of-e-mail-users-worldwide/
The Radicati Group, Number of e-mail users worldwide from 2018 to 2028 (in millions) Statista, https://www.statista.com/statistics/255080/number-of-e-mail-users-worldwide/ (last visited October 28, 2025)
Number of e-mail users worldwide from 2018 to 2028 (in millions) [Graph], The Radicati Group, January 2, 2025. [Online]. Available: https://www.statista.com/statistics/255080/number-of-e-mail-users-worldwide/
