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.
安全意識 https://www.brain-classroom.com/2013/03/%e5%ae%89%e5%85%a8%e6%84%8f%e8%ad%98/