Having a report that automatically tracks transactions accrued by customers is a great idea, Allison. However, QuickBooks Desktop (QBDT) doesn’t include a built-in feature to list customers without transactions over a specific period. As a workaround, you can use the Customer List Report to view all customers and the Transaction List by Customer Report to review their activity within a specific time frame.

Here's how you can get the reports:

1. Go to the Reports menu and select Customer & Receivables. 
2. Choose Customer Contact List or Transaction List by Customer.
   
3. Customize the report period of your Transaction List by Customer to ten years and manually review the transactions for each customer.

Next, we can manually identify the customers with few or no transactions during this period by exporting them into an Excel file and using its tools to count the transactions.

Feel free to reply to this post if you need further assistance with managing the customer list. The Community is available 24/7 to help.