Disable new order emails

I would like to disable that when someone makes a purchase of a product with credits, no email arrives, I use the option of one click buy and you can get to make 10 purchases at once, and spamming with 10 emails in a row is too much.

I do want the customers to receive an email when they buy the bundle of credits, but all the products that can be purchased with credits, I would like to disable that email. Is this possible?

Thank you.