Urban Airship announced Sunday (Nov. 6) that it has raised $15.1 million in Series C funding from strategic investors and Verizon as well as existing investors Foundry Group and True Ventures. The investment, which comes less than a week after Urban Airship’s acquisition of SimpleGeo, brings the mobile infrastructure and apps company’s total funding to $21.6 million.

The company said the funding will go toward growing Urban Airship’s platform that puts push notifications, in-app purchasing, subscriptions, context and geo-location on a single platform, enabling developers to build intelligent, context-rich apps that consumers will find more valuable and therefor will use more frequently.

Urban Airship has more than 20,000 customers of all sizes, including Fox Television, The Weather Channel, Warner Bros., Tapulous, Mashable, Yahoo! and Groupon.

“The velocity of change just won’t stop in mobile and we are working hand in hand with some of the world’s biggest brands to help them set their mobile strategies, and create experiences that consumers will love,” Scott Kveton, chief executive officer, Urban Airship, said in a statement. “We’ve got the best team, best technology and a proven business model. Now, with this infusion of capital, the Airship is set to really take off.”

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