Could anyone tell me how to add a custom email variable to a shopify order notification?
For example, by default the order notification already contains the following:
Shipping address
{{ shipping_address.name }}
{{ shipping_address.street }}
{{ shipping_address.city }}, {{ shipping_address.province }} {{ shipping_address.zip }}
{{ shipping_address.country }}{% endif %}
These variables then translate into the actual shipping address of the customer in particular. Now I want to add a line of information from a third party source into this order notification, how would I go about this? I need a license key put in the Shopify order notification e-mail but this license key comes from a service outside of Shopify, is there any way I could make this happen one way or another?