MoVoxx, a Santa Monica, Calif.-based company that helps brands and agencies integrate ads into SMS campaigns, has raised an undisclosed amount in a first round of funding. The investment group includes: Greycroft Partners, Khosla Ventures, First Round Capital and BV Capital. Founded in September 2006, MoVoxx claims its publishing network already includes 60 million impressions a month, and that in the last year, it has run campaigns for a number of familiar national brands. MoVoxx said it began delivering its publishing partners’ SMS traffic at no cost in October, which is a sign of the company’s volume.