Email facts There are over 4.371 billion email users. This figure is predicted to reach 4.84 billion by 2027 which is a growth of more than 4% yearly. - Radicati Group (2023) There are 4,481 billion email users worldwide who send and receive 361.6 billion emails per day. - Radicatti Group (2023) 961.697 legitimate emails are sent every second, making 3.462.108.804 legitimate emails per hour. - In