ShapeShift allows you to have your receipt emailed to you after your trade is complete. If you would like a receipt for your trade, you will have to wait until the exchange is fully completed.
After your successful trade, your status page will look like this:
As you can see, there is a text box that says "Email Receipt". Please click into this box and type the email address that you would like the receipt sent to. Then click the "Submit" button to the right. A small loading circle will spin. Once complete, you will see this green box:
If you see this, you will have received an email from ShapeShift.io with your receipt. If you do not see it right away, please check your spam folder.