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.
力筆從心 https://www.side-gas.org/2013/03/%e5%8a%9b%e7%ad%86%e5%be%9e%e5%bf%83-2/