Identifier or unique name for the conversation. Fired when the client leaves a conversation. Fired when a participant has left a conversation. The Send Message Widget should, therefore, deliver a message to the support agent number you just added to the Conversation. This means multiple users from different supported messaging platforms are able to seamlessly communicate with one another. The auth token pairs with your Twilio account identifier (also called the account SID) to provide authentication for the Twilio REST API. directly in your web app using a