Like any business, primarily if they geared towards services like lawyers, they need to inform their followers what is new and how it can impact their lives. Remember that providing information is critical to help create engagement to your subscribers.
I recommend using, allowing you to communicate automatically to your followers by Email. Facebook Messenger and Push Notifications. Also, it will enable gaining more customers using its Leads Magnets. That is just the tip of the iceberg with everything you can do with .