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.
四川夏令營 http://graduate.socialwork.hku.hk/2010/03/15/%e5%9b%9b%e5%b7%9d%e5%a4%8f%e4%bb%a4%e7%87%9f/