End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
下午3點多了, ... https://cat-sky.tw/2013/04/09/%e4%b8%8b%e5%8d%883%e9%bb%9e%e5%a4%9a%e4%ba%86/