Available communication channels
✓ Web chat (authorized and unauthorized)
✓ Mobile App (iOS/Android)
✓ WhatsApp, imessage, VK / OK, FB, Viber, Telegram, Skype
✓ Yandex. Chat, Yandex Market, Apple Store, Google Market ......Avito, Cyanogen, Yula
✓ Email
✓ SMS
✓ Speech to Text conversion