How can see the last 10 or 20 invoices emails I sent?

I admire your interest in getting this data, Ariel.

You can pull an Invoice List report to show the last 10 or 20 invoices you've sent. Then customize the statement column to add the Sent header for that specific reporting period.

Here's how:

1. Go to the Search tab and then type "invoice list."
2. Select Invoice List.
3. Click the Mini Gear icon on the statement.
4. Tick the Sent box and then untick unnecessary headers.
5. From the Report period drop-down, choose a particular period when you sent invoices.
   
   
    
6. Hit Run report.
   
   

This will show you the 10 or 20 sent invoices data. You can reference this article for more details about choosing targets and sources to customize reports: Customize reports in QuickBooks Online.

Additionally, you can check this resource to see the invoices status if it has been sent and viewed by your client: Track the status of invoices in the QBO mobile app.

Let me know if you have other QuickBooks concerns in mind. I'm always here to help you more. Have a safe day and more power to your business!