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.
1С-Битрикс бесплатно, а почему бы и нет? https://serg-smirnoff.com/2010/01/29/post_5012.htm