As the audience for messaging apps such as WhatsApp and Snapchat grow, several competing firms are emerging and are figuring out how to monetize their large number of users, according to analysts.
Messaging apps have become incredibly popular in recent years. Facebook Messenger, for example, has grown from 200 million monthly users in April 2014 to 900 million in April 2016, according to research by market data firm Statista.
As a result, many companies are trying to break into the messaging space and there have been some surprising examples. For instance, Japanese video game developer Nintendo's first official mobile app, "Miitomo," was not a video game but a social media and messaging app.
And in October last year, tech strategist Michael Wolf predicted there would be 1.1 billion new users of messaging services by 2018.