millions of emails daily

3.6 million

corporate emails daily

With one of the largest corporate email systems, the Postal Service handled more than 3.6 million legitimate emails a day in 2023, delivered to more than 195,000 email accounts.

* | Tags: Innovation USPS Fact #338 | April 19, 2024
  • But some emails are blocked due to:
    • Spam: More than 2 million spam email messages were blocked monthly.
    • Content: More than 1 million emails were blocked monthly due to malicious content including phishing, brand spoofing and suspicious URLs being detected.
    • Malware: More than 12,000 email messages were blocked monthly due to malware.
    • Phishing: More than 815,000 phishing email messages were blocked monthly.
    • On average, 5 percent of the 109 million email messages received from external senders were blocked monthly for the safety of the Postal Service network and email users.
  • In 2023, the Postal Service email gateway system delivered more than 5 billion external email messages to postal customers and business partners. Roughly 82 percent of these were automated messages from Informed Delivery. The Postal Service also delivered 107 million notification emails related to COVID-19 test kits.