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.
https://prostoknow.com/lifestyles/home-and-garden/article_1caf8e18-52b1-11e7-b6cf-a3aa39422e8b.html