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.
電話診病 https://www.brain-classroom.com/2013/07/%e9%9b%bb%e8%a9%b1%e8%a8%ba%e7%97%85/