Sign up for a free Integromat account or log in to an existing one.
Go to the My Scenarios section and click on the Add new scenario button.
Search the scenario marketplace for the Download and send a receipt from Make scenario.
Click on the scenario to open and press the Use this template button.
In the Email field, enter the email address where the payment receipt will be sent.
In the Recipient field, enter the email address of the person to whom you want to send the payment receipt.
Press the Create Scenario button to finish.
When the new email about the payment is received, the scenario downloads this invoice and sends it to the specific recipient.