Email settings
Check to enable the feature to send tracking numbers to customer
Ensure that iBen email is enabled here too: WooCommerce->Settings->Emails -> (iBen) UPS Order Tracking email
Hide checkbox and ALWAYS send tracking code email
Display checkbox as unchecked.
Display checkbox as checked - Recommended
Write the text you want to displayed in iBen email
[iben_ups_tracking_shipping_first_name] = First name of customer
[iben_ups_tracking_shipping_last_name] = Last name of customer
[iben_ups_tracking_code] = ZL4556544126
[iben_ups_tracking_service_name] = UPS Sandard