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.
節儉的謬誤 https://www.brain-classroom.com/2013/09/%e7%af%80%e5%84%89%e7%9a%84%e8%ac%ac%e8%aa%a4/