With Twilio's Conversations API, you can implement group chats in WhatsApp, a feature which is not offered natively in WhatsApp's API. With this code sample, you can implement multi-participant chat for up to 50 people that users can opt into and communicate through a single Twilio WhatsApp sender (business profile).
How it works for end users
The code for this sample is available on GitHub to view.
You will need an Account SID and Auth Token in order to run this code.
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Follow the setup instructions in the README to get the sample up and running.