The ability to add a Custom SMS Number is available on all Modern and Advanced plans. It allows you to select a custom, randomly generated phone number within the area code you choose. This phone number will be the number that your automated text messages come from.
Setting your custom SMS number gives your customers the ability to reply to your automated messages! Their responses will go straight to the messages portion of your app. If your customer calls that number, it will forward to your business number you have set in your company settings.
To read more about the notifications your customers can receive, click here.