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.
■電子書籍 https://takeuchiyoshihiro.com/2012/05/02/%e2%96%a0%e9%9b%bb%e5%ad%90%e6%9b%b8%e7%b1%8d/