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.
https://123deta.com/document/zw3wjrly-HOKUGA学級うまく機能ない状況どう考える小学校から自由記述回答中心.html