More than 20 percent of the world’s spam, and more than 30 percent of the world’s legitimate email, come from the United States, making it the largest producer of each, according to Mailshell SpamIQ.

The United States drives the world’s growing email overload. More than 20 percent of the world’s spam, and more than 30 percent of the world’s legitimate email, originate in the US, making it the largest producer of each, according to results published today by Mailshell SpamIQ’s analysis of global email patterns for the month of February. Mailshell SpamIQ tracks global email traffic patterns, create profiles of spam to identify new attack vectors, and quantifies email filters’ detection rates.