The screenshots show the Russian interface.
This app connects the AssistBot service to your Bitrix24

AssistBot offers comprehensive features: everything you need from messenger integration, with a choice of standard WhatsApp or WhatsApp Business API, Telegram or fallback SMS delivery when the number has no WhatsApp.
Quick connection, stable operation and responsive support 7 days a week.

Features:
Start conversations from your CRM or AssistBot dashboard
Connect multiple WhatsApp/Telegram numbers
Store conversation history in your CRM and AssistBot dashboard
Run bulk messaging and surveys
Export analytics on sent template messages and analyze responses
And much more. If something is missing, it can be implemented!

Bulk messaging can be launched from your AssistBot dashboard. To set up a campaign, first export the recipient database and save it as an Excel file







