On-demand email and one-to-one marketing provider ExactTarget announced today it surpassed $100 million in sales year-to-date, making it one of few software-as-a-service companies in history to exceed the nine-figure mark.

Fuelled by a growing enterprise client list, the company's 2009 year-to-date performance continues its streak of 35 consecutive quarters of growth, placing it among the world's top software as a service companies such as Salesforce.com, SuccessFactors and Concur.

"Achieving over $100 million in sales for the year is historic for ExactTarget and the software as a service industry," said Peter McCormick, ExactTarget's general manager and co-founder.

"Our industry leading growth has allowed us to outpace the competition and fuel increased investment and innovation. This in turn has enabled our clients to drive unprecedented ROI through digital communications channels including email, text messaging, voice messaging and social media."

The company has also secured more than $140 million in venture capital investment from blue-chip investors in the past seven months.

In November, Silicon Valley-based Technology Crossover Ventures invested $70 million in ExactTarget, adding to its holdings of technology and software firms that includes Netflix, eHarmony, Expedia and Zillow.

In May, ExactTarget secured $70 million in funding from Battery Ventures, Silicon Valley's Scale Venture Partners and repeat investment by Montagu Newhall.