Is there a report which tells me when I have sent an invoice by e mail on QB to a customer.

Yes, there is, @mick15.

You can run the Invoice List report in QuickBooks Online to see a complete list of your invoices and when you sent them. It also contains details associated with your invoices.

Here's how:

1. Go to the Reports menu.
2. Select/enter Invoice List.
   
3. Click Customise, then select the date period.
4. Under Rows/Columns, select the Delivery Address and Sent.
   
5. Press Run report.
   

I’ve attached a reference in case you want to keep the same report settings for future use: Memorise reports in QuickBooks Online. It helps you access the information quickly to save time.

If you have other report concerns or questions, just post them below. I’ll make sure to take care of them for you. Have a great day ahead!