How to trigger the Refund Notification email
The Additional Payment Receipt or Refund Notification template is used to send receipt when payment is recorded for Partially paid or Pending refund or Pending Pay Later Contribution.

To trigger this you will need to create Pending Paylater Contribution and then under Contribution tab of Contact or Find Contribution results click on More &gt;&gt; Record Payment besides the contribution row. 


Submit the Payment form by checking Automatically email a receipt to xxx ??


HTH

Pradeep