Silverpop, a provider of e-mail marketing services, has acquired Vtrenz, a provider of marketing automation and lead management services.

Financial terms of the deal were not disclosed.

Vtrenz is based in North Dakota.

The combined company plans to offer what it calls the “broadest lifecycle” of marketing solutions.

Silverpop, which is privately held, has raised venture capital from investors such as Total Technology Ventures, Draper Fisher Jurvetson, ePlanet Partners and NeoCarta Ventures.

“Silverpop has experienced phenomenal growth in terms of customers, product offerings and revenue during the past few years,” said Silverpop CEO Bill Nussey, a longtime entrepreneur in Research triangle Park, N.C.. “Now the powerful combination of Silverpop and Vtrenz further expands our offerings and allows us to deliver the broadest set of relationship-building solutions in the marketplace.”

The company’s technologies will enable customers to acquire more actionable data from their customers across various channels, Nussey added.

Vtrenz offers multi-channel integration and campaign automation technologies via the Web that work with other products such as Salesforce.com and Microsoft Dynamics CRM.

"The Vtrenz acquisition brings a tremendous level of experience and technical insight that will further accelerate the availability of these cutting edge features into Silverpop’s email marketing product line," Nussey said. "Silverpop’s worldwide sales organization will provide Vtrenz the largest and broadest sales force in the demand management industry."

Vtrenz will operate as a Silverpop company and be led by Will Schnabel as general manager. He was the CEO of Vtrenz. The company was launched in 1999.

Silverpop also was launched in 1999. It has offices in London, Dallas, Irvine, Ca., New York, San Francisco and Seattle.