The live chat enables real-time messaging as well as a saved history. Your site-visitors can see only the last 30 minutes of the chat-history. On the agent-side, the chat-history is unlimited (based on the subscription plan).
Your site visitors will see the chat-box if it is included on the widget. It includes Emoji's and a voice-recording feature that will enable you to listen to your client's audio messages.
Your client can see whether their messages were delivered and read by you (the two green V checks).
The chat will automatically pop with one of the messages you defined (based on whether you are available or not).