Twitter today announced it has purchased India-based mobile marketing company ZipDial.

ZipDial has built a mobile platform that lets people follow and engage with content across all interfaces, according to a Twitter blog post. The user experience combines SMS, voice, mobile Web, and access to mobile apps to bridge users from offline to online.

For example, through ZipDial, it’s easy to engage with a publisher or brand by making a toll-free "missed call" to a designated phone number. The caller will then begin receiving inbound content and further engagement on the phone in real time via voice, SMS or an app notification. These interactions are especially appealing in areas where people aren’t always connected to data or only access data through intermittent wifi networks, Twitter said. 

"This acquisition significantly increases our investment in India, one of the countries where we’re seeing great growth, and also brings us a new engineering office in Bangalore," Twitter wrote in the blog post.