adding head tags in oc mail

Hi,

I need a help, I was trying to add some json script in head of the html mail sent through OC. This is related to action buttons on gmail. Can someone guide me how can i add any script in head of the mail. Please help.

You're going to want to add your header script to the template file at: /upload/catalog/view/theme/default/template/mail/order.tpl