If you are looking for a way for "admins" send messages to "members", then using third party tools such as Intercom and Drift, you can easily make that possible.
All you would need to is to add the code provided from those platforms to your theme's code section. Go to Admin Panel> Theme> Advanced Setting to find the <body> tag section to add it. We also offer a native integration with Intercom that helps you get more than just the messenger box.
But, if you want regular users to chat and send messages to one another, we have that feature coming up soon. Check out our roadmap post86 and see the latests status and soon to be released features.