Hello, @kirstensieg04.
When you send an invoice, your customer will receive an email that says you've sent them an invoice. It contains a summary with the amount due, the due date, and the link to view more details.
Once you click on the link, it will route you to a payment site where they can review it. They can simply click the View invoice button on the right side to view its details.
You can refer to these articles for more insights about customizing your invoice in QuickBooks:
Swing by here again if you have other questions about using the invoicing feature in QuickBooks. Have a great weekend!