By default, WooCommerce sends emails to notify the store owner and customer about the status of their orders. Many of these emails are unnecessary for Point of Sale orders, for example, the store owner may make hundreds of POS orders in a day, receiving a new order notification for each order would only clutter the inbox and distract from other important alerts about an online order.
Using the WooCommerce POS settings store owners can choose to enable or disable the email notifications from WooCommerce, this will affect only the orders processed through the POS system.