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.
數學與投資 https://www.mpfdiy.com/2017/05/%e6%95%b8%e5%ad%b8%e8%88%87%e6%8a%95%e8%b3%87/