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/ml/എങ്ങനെ-സർട്ടിഫൈഡ്-GST-പ്രാക്ടീഷണർ-ആകാം/