Hello @userlittlerascals-ki,

Welcome to the Community. Let me help you with your invoice concern in QuickBooks.

Currently, the option to send a receipt is unavailable in the Self-Employed version. However, you can send a copy of the invoice via PDF showing the payment.

Here's how:

1. On the left navigation bar, click Invoices.
2. Search for the invoice.
3. Select the View option under the Action column. 
4. Press Email at the bottom. 
5. Enter the necessary information, then hit Send. 

For additional reference, you can use the following article to personalize invoices: Create invoices in QuickBooks Self-Employed.

Fill me in if you have additional questions about your invoices in QuickBooks. I'm always here to help. Take care always.