How do I see when a customer has opened their emailed invoice?

It's nice to see you here in the Community! I'm here to help you check the delivery status of your invoices in QuickBooks Self-Employed.

You can find out if invoices have been Sent, Viewed, Deposited, or Paid by following these steps:

1. On the left navigation panel, go to Invoices.
2. Head to the Invoices tab.
3. Check the Status column.

If the status says "Viewed," you'll know your customers have read the email. I left a screenshot below for you.

If you encounter any issues with invoice delivery, you can refer to this article for guidance: Fix undelivered invoices.

You may also check out this article for troubleshooting steps if your customers aren't receiving sales forms via email: Troubleshoot if customers aren't receiving emails.

If you need further help with emailing your invoices in QuickBooks, feel free to reach out. I'm here to ensure that you have a smooth experience using QuickBooks.