You can use the following variables:
[id] - content ID[title] - content title[categories] - content categories[email] - user's email[hashed_email] - hashed user's email[first_name] - user's first name[last_name] - user's last nameFor the WooCommerce or Easy Digital Downloads Thank You Pages only:
[order_number] - order number[order_subtotal] - order subtotal[order_total] - order total[currency] - currency