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.
http://khatabook.com/blog/hi/नॉन-डिस्क्लोजर-एग्रीमेंट:-लाभ-और-सावधानियां/