Mobile payments startup Boku announced today that it has bought Mobileview Italia, a move that will help the San Francisco-based company increase its footprint in Europe.

Boku did not disclose the amount it paid, but noted that Mobileview already has deals in place with Italy’s four largest carriers.

Founded in 2009, Boku lets consumers pay for content using their mobile phone accounts. This means they don’t need a credit card to purchase items via their phone, something that can be a challenge in developing countries where credit card adoption remains low.

Of course, it’s not just true of developing countries. According to Boku, only 34 percent of Italians have credit cards, whereas almost everyone has a mobile phone now. The payments can be made using both pre-paid accounts and accounts with monthly subscriptions.

The deal is the latest move for the rapidly expanding Boku, which has already raised $70 million from such notable venture firms as Andreessen Horowitz, Benchmark Capital, DAG Ventures, Index Ventures, Khosla Ventures, and NEA.

Boku now operates in 67 countries, where it could reach as many 4 billion people through its partnerships with 250 mobile carriers. Earlier this year, the company announced a deal to provide its mobile payment service through Google Play, which has also significantly expanded its reach.