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.
午夜随笔 https://lyjhc.com/2012/10/%e5%8d%88%e5%a4%9c%e9%9a%8f%e7%ac%94.html