Wondering if a report exists that would highlight invoices which have not been sent, in the Statas column for Invoice Activity

Hi toniw,

You can run a report of your sent or not sent invoices in QuickBooks Online. Let's go to the Reports tab and run Transaction List by customer report. Here's how to:

1. Click on the Reports tab.
2. Locate or type in Transaction List by Customer report.
3. Click on Customise.
4. Set the Report period.
5. Click on Rows/Columns tick box for To be sent.
6. In the Filter tick on Transaction type and choose Invoice.
7. Click on Run report.

You can also check this link to learn more about Customising reports in QBO. 

Please feel free to reach out to us again if you need anything else about generating reports in QBO.