Receipts in Blackthorn | Donations are sent from the Transactions object. There are many fields not on the Transaction layout that you can use in your email template. See our Email Receipts documentation from Blackthorn | Payments for more information.
If you want to include fields from Opportunity on your email template, create Formula Fields on the Transaction object of type Text to bring the value from the Opportunity Field onto the Transaction. You can then include that field in your email template that's sent from the Transaction object.
Updated about 4 years ago