Omnichannel Messaging Platform for Marketing, Support & Sales

We are looking to create an Omnichannel Messaging Platform which will include all social media platforms like WhatsApp, Telegram, Viber, Video calls, Twitter DM, Slack, Calendly, Zoom, etc. Should also include a web messenger embed so the client can download their Java plugin and install on their website or application. A ticketing system is also required. An email SMTP client should be also connected on the platform so customers can email us and show in the same screen. All accounts should be sandboxed so we can add the required parameters and activate the social media, email or video call accounts. A string should be created for all customers so when they contact us again, it should show their last connect, issue, resolution, etc. details if the email or phone number matches their account.

This is something similar to Chaskiq or Chatwoot.

Technologies to be used:
ReactJS
NodeJS
Javascript
Postgres SQL
Grafana

Full source code to be provided along with minimum 6 months bug management.