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.
Dropbox更新加入最期待功能:任何位置上傳檔案! https://qooah.com/2015/02/18/dropbox-added-extension-support/