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.
由牛尾海說起 https://www.wingleung.me/2014/08/%e7%94%b1%e7%89%9b%e5%b0%be%e6%b5%b7%e8%aa%aa%e8%b5%b7.html