I manually processed a visa payment for my client. How do I send them a receipt?

Hello jackie@psi.show, 

Using QuickBooks Payments is excellent for receiving your income in a timely fashion. While the payments system will normally send a receipt directly to your customer when the card is processed, QuickBooks Online allows you to email a receipt directly to your customer at any time afterwards as well. I can walk you through how to send your customer their receipt after processing the payment. 

The first step is to navigate to the transaction in question within the Sales or Customer menu, whichever you prefer. Once there, click on the payment that you processed. When in the payment processing screen, please ensure that the process credit card tick box is unchecked, or else your customer's card will be double charged. After reviewing that, go to the green dropdown arrow button to the bottom right and select Save and send. You can then enter the email address to which the receipt will be sent and edit the accompanying message to the customer. Once those fields are completed, click Send and close. 

Your customer will then receive a receipt via email for their credit card payment. You can learn more about processing credit card payments in this article: Process a credit card payment in QuickBooks Online

Let me know if I can assist with anything else!