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.
舊患與頭痛 https://www.brain-classroom.com/2017/02/%e8%88%8a%e6%82%a3%e8%88%87%e9%a0%ad%e7%97%9b/