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.
陶傑瀆書 https://borderless-hk.com/2016/10/08/%e9%99%b6%e5%82%91%e7%80%86%e6%9b%b8/