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.
[教學] 如何讓Facebook聊天室也能換可愛的主題? https://qooah.com/2013/07/14/how-to-change-facebook-chat-layout/