Blocking email

With one of the largest corporate email systems, the Postal Service handled more than 5 million legitimate emails a day in 2022, delivered to more than 185,000 email accounts. But some emails are blocked due to:

• • Spam: More than 5 million spam email messages were blocked monthly.
  • Content: More than 16 millionemails were blocked monthly due to malicious content including phishing, brand spoofing and suspicious URLs being detected.
  • Malware: More than 5,000 email messages were blocked monthly due to malware.
  • Phishing: More than 675,000 phishing email messages were blocked monthly.
  • On average, 25 percent of the 101 million email messages received from external senders were blocked monthly for the safety of the Postal Service network and email users.