"The growth in abusive messages has overwhelmed legacy antispam filters," Debrincat said.

"That has served as a catalyst for service providers to adopt Cloudmark's solutions in major markets across the US, Europe and Japan. Now we are seeing momentum build for its global-focused solution in Australia with rapid growth in our reseller channel."

Cloudmark added more than 130 million new mailboxes to its user base in 2006.

Up to 90 percent of all e-mails will be spam by the end of this year, according to research released last week.

Security vendor Marshal Ltd.'s Threat Research and Content Engineering (TRACE) team monitored spam traffic from spots located across 18 countries and recorded a 30 percent increase over the last week, which smashed global record levels.