Here's some snippets from a Google search:
- Report: Spam now 90 percent of all e-mail
- 4% of all internet traffic either DDOS packets or spam email
- more than 50% of email is SPAM
- Spam traffic dropped precipitously in January, falling to 78.6 percent of all emails
Is there a reliable source to identify the amount of total internet traffic that is spam emails?
How is this calculated?