Customizing refund notification email

hello, 

i often have customers do multiple purchases at the same time (due to how fast things sell out, they sometimes prioritize one thing and then go back for another item). i usually will combine these orders and refund them the difference in shipping.

so when i submit the partial refund, i’d like to be able to add a message in that notification email that gets sent to the customer. is there anywhere to do this? if not is there some sort of coding i can do?

i hope that makes sense. thank you!

ok thank you! always worth asking just in case i missed something. 🙂 appreciate the response.