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推出爆速串流同步,檔案越大同步速度就越快! https://qooah.com/2014/07/12/dropbox-introducing-streaming-sync/