According to Commtouch, an anti-spam technology vendor, the following countries ranked highest in spam generation in July 2004:
- United States 45.84%
- South Korea 13.51%
- China 9.21%
- Brazil 3.8%
- Hong Kong 3.26%
- Canada 3.25%
- Japan 2.83%
- Spain 1.80%
- Mexico 1.57%
- France 1.31%