Silverpop, an Atlanta-based marketing technology firm that focuses on email, has taken $15 million in additional funds for expansion, despite reported profitability since 2004.

Silverpop offers both business-to-customer and business-to-business marketing tools, and also provides measurement and analytics. The company is planning on expanding into the international market.

The $15 million round was led by D.E. Shaw, with participation from Draper Fisher Jurvetson, which also invested in past rounds.