How to get payment receipt/invoice from PayPal?

Getting Genius Vision invoice

Automatic invoice generation is available for transaction placed after 2017/11/1. Instruction as follows:

After transaction is completed successfully, you should receive an Email like the following format. Please click the "Invoice URL" link as indicated below, you will get a printable webpage of Commercial Invoce.

Example of automatic generated Commercial Invoice:

Getting PayPal receipt

Login to your PayPal account, locate your transaction, and click Details link over it.