Viber, a messaging app, has joined the TransferTo B2B mobile payment network. The move is expected to enhance the experience of more than 800 million registered Viber users, expand the company's global reach and increase Viber Out revenue streams, according to a press release from the companies.

Viber said that by joining the TransferTo Network, it can introduce new avenues for Viber Out credit to be purchased globally from retail outlets, and through mobile operators and payment services.

While Viber voice calls are free between Viber users, Viber also offers a solution called Viber Out, which allows Viber users to call any phone number at low rates, even if the destination number does not have the Viber app (for example, a landline phone). Viber Out users typically purchase credit via the Viber app or website.

"Our vision is a seamlessly connected mobile payments world across developing and developed countries," said TransferTo founder and CEO Eric Barbier. "Friends, family and businesses can send and receive money or airtime with very little effort, anytime and anywhere. We welcome Viber to our network, and are thrilled to be in a unique position to provide dual benefits: more service options for Viber users; and new avenues of business to partners in our network. Providing multiple purchase options is especially important for migrant workers who want to send Viber credits to friends and family back home."

"Joining the TransferTo network is a natural next step to interconnect our users and the global mobile community together," Robi Kopel, fintech lead at Viber, said in a statement. "With Viber Out credit top-ups, friends or family can send or receive Viber Out credit as gifts and most importantly, connect with the people who matter the most."