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.
頭暈與失眠 https://www.brain-classroom.com/2018/11/%e9%a0%ad%e6%9a%88%e8%88%87%e5%a4%b1%e7%9c%a0/