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://www.bennubook.com/book/14081/کتاب-قدرت-گروه-مثبت-اثر-جان-گوردون-ناشر-هورمزد