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.
给学生做活动2 https://willywah.net/2010/07/%e7%bb%99%e5%ad%a6%e7%94%9f%e5%81%9a%e6%b4%bb%e5%8a%a82/