Hello @hoteladdict!
If you're referring to Appointment notifications you can have your customers receive notifications via email, SMS, or both. You can adjust these settings on the Appointments Tab on your Square Dashboard. Once you're on the tab select Settings in the top right corner. Then select Communications from the menu options.
If a customer replies to their booking email it will be automatically routed to your email inbox. Right now customers can't respond via SMS.
If you still have questions please feel free to reach out to me! 🙂
