50 Interesting Facts About Email for 2026 | How Many Emails Are Sent Per Day?

Email has been a fundamental part of daily communication for decades, and it continues to evolve as the internet, smartphones, and cybersecurity threats reshape how we use it. Below is an updated, source-backed list of the most interesting email facts and statistics I could verify with recent reporting and industry research.

Here is a list of email service providers.

Facts About Email and Email Statistics (2026)

How Many Emails Are Sent Per Day?

1. Total emails sent per day (2024):
   361.6 billion
   Last updated: Radicati (2024–2028 forecast)
2. Total emails sent per day (2025):
   376.4 billion
   Last updated: Radicati (2024–2028 forecast)
3. Total emails sent per day (2026):
   392.5 billion
   Last updated: Radicati (2024–2028 forecast)
4. Total emails sent per day (2027):
   408.2 billion
   Last updated: Radicati (2024–2028 forecast)
5. Total emails sent per day (2028):
   424.2 billion
   Last updated: Radicati (2024–2028 forecast)
6. Emails sent per hour (2024):
   ~15.07 billion per hour (based on 361.6B/day)
   Last updated: Calculated from Radicati daily estimate
7. Emails sent per hour (2025):
   ~15.68 billion per hour (based on 376.4B/day)
   Last updated: Calculated from Radicati daily estimate
8. Emails sent per hour (2026):
   ~16.35 billion per hour (based on 392.5B/day)
   Last updated: Calculated from Radicati daily estimate
9. Emails sent per hour (2027):
   ~17.01 billion per hour (based on 408.2B/day)
   Last updated: Calculated from Radicati daily estimate
10. Emails sent per hour (2028):
    ~17.68 billion per hour (based on 424.2B/day)
    Last updated: Calculated from Radicati daily estimate
11. Emails sent per minute (2024):
    ~251.1 million per minute (based on 361.6B/day)
    Last updated: Calculated from Radicati daily estimate
12. Emails sent per minute (2025):
    ~261.4 million per minute (based on 376.4B/day)
    Last updated: Calculated from Radicati daily estimate
13. Emails sent per minute (2026):
    ~272.6 million per minute (based on 392.5B/day)
    Last updated: Calculated from Radicati daily estimate
14. Emails sent per minute (2027):
    ~283.5 million per minute (based on 408.2B/day)
    Last updated: Calculated from Radicati daily estimate
15. Emails sent per minute (2028):
    ~294.6 million per minute (based on 424.2B/day)
    Last updated: Calculated from Radicati daily estimate
16. Emails sent per second (2024):
    ~4.19 million per second (based on 361.6B/day)
    Last updated: Calculated from Radicati daily estimate
17. Emails sent per second (2025):
    ~4.36 million per second (based on 376.4B/day)
    Last updated: Calculated from Radicati daily estimate
18. Emails sent per second (2026):
    ~4.54 million per second (based on 392.5B/day)
    Last updated: Calculated from Radicati daily estimate
19. Emails sent per second (2027):
    ~4.72 million per second (based on 408.2B/day)
    Last updated: Calculated from Radicati daily estimate
20. Emails sent per second (2028):
    ~4.91 million per second (based on 424.2B/day)
    Last updated: Calculated from Radicati daily estimate
21. Growth in daily email volume from 2024 to 2025:
    ~4.09% (361.6B → 376.4B)
    Last updated: Calculated from Radicati daily estimate
22. Growth in daily email volume from 2025 to 2026:
    ~4.28% (376.4B → 392.5B)
    Last updated: Calculated from Radicati daily estimate
23. Growth in daily email volume from 2026 to 2027:
    ~4.00% (392.5B → 408.2B)
    Last updated: Calculated from Radicati daily estimate
24. Growth in daily email volume from 2027 to 2028:
    ~3.92% (408.2B → 424.2B)
    Last updated: Calculated from Radicati daily estimate

How Many People Use Email?

25. Number of email users worldwide (2024):
    4.48 billion
    Last updated: Radicati (2024–2028 forecast)
26. Number of email users worldwide (2025):
    4.59 billion
    Last updated: Radicati (2024–2028 forecast)
27. Number of email users worldwide (2026):
    4.73 billion
    Last updated: Radicati (2024–2028 forecast)
28. Number of email users worldwide (2027):
    4.87 billion
    Last updated: Radicati (2024–2028 forecast)
29. Number of email users worldwide (2028):
    5.02 billion
    Last updated: Radicati (2024–2028 forecast)
30. Average emails sent per user per day (2024):
    ~80.7 emails/user/day (based on 361.6B emails and 4.48B users)
    Last updated: Calculated from Radicati estimates
31. Average emails sent per user per day (2025):
    ~82.0 emails/user/day (based on 376.4B emails and 4.59B users)
    Last updated: Calculated from Radicati estimates
32. Average emails sent per user per day (2026):
    ~83.0 emails/user/day (based on 392.5B emails and 4.73B users)
    Last updated: Calculated from Radicati estimates
33. Average emails sent per user per day (2027):
    ~83.8 emails/user/day (based on 408.2B emails and 4.87B users)
    Last updated: Calculated from Radicati estimates
34. Average emails sent per user per day (2028):
    ~84.5 emails/user/day (based on 424.2B emails and 5.02B users)
    Last updated: Calculated from Radicati estimates

Spam, Phishing, and Malicious Email (Most Recent Data Available)

35. Share of spam in global email traffic (2024):
    44.99%
    Last updated: Kaspersky (2024)
36. Total phishing attempts blocked (2024):
    554,002,207
    Last updated: Kaspersky (2024)
37. Malicious email attachments detected (2024):
    144,722,674
    Last updated: Kaspersky (2024)
38. Top spam source country (2024):
    Russia (32.50%)
    Last updated: Kaspersky (2024)
39. Second top spam source country (2024):
    China (11.73%)
    Last updated: Kaspersky (2024)
40. Third top spam source country (2024):
    United States (8.33%)
    Last updated: Kaspersky (2024)
41. Other major spam source country (2024):
    Japan (4.19%)
    Last updated: Kaspersky (2024)
42. Other major spam source country (2024):
    Poland (3.44%)
    Last updated: Kaspersky (2024)
43. Other major spam source country (2024):
    Germany (3.19%)
    Last updated: Kaspersky (2024)
44. Other major spam source country (2024):
    Brazil (2.88%)
    Last updated: Kaspersky (2024)
45. Other major spam source country (2024):
    India (2.82%)
    Last updated: Kaspersky (2024)
46. Other major spam source country (2024):
    Netherlands (2.46%)
    Last updated: Kaspersky (2024)
47. Other major spam source country (2024):
    United Kingdom (1.43%)
    Last updated: Kaspersky (2024)

Classic Email History (Stable Facts)

48. Year the first email was sent (commonly credited to Ray Tomlinson):
    1971
    Last updated: Encyclopaedia Britannica
49. Year the first widely cited “spam” email was sent (ARPANET marketing message):
    1978
    Last updated: Wikipedia (historical overview)
50. Year SMTP was first published as an Internet standard:
    1982 (RFC 821)
    Last updated: RFC Editor

That’s the latest updated list I can verify with recent sources. I’ll continue adding more as newer, source-backed stats are published.