When an incorrect customer email address is entered, will we receive an email notification that the customer did not receive our email with an invoice?

Yes, you'll receive an email notification, ddia84402. Allow me to share some insights regarding email delivery in QuickBooks Online (QBO).

If the customer's email address is incorrect, the email bounces. The recipient's email service sends a failure or delivery error notification to your email service. If the delivery failure error is sent to us by your email service provider, a notification is added to the invoice transaction stating the email delivery failed.

In addition, if you encounter delivery failure you can consider checking out these articles to isolate the problem:

• Troubleshoot if customers aren't receiving emails from QBO
• Invited Users did not receive the email invitation for QBO

I'll keep an eye out for your reply. If you have further questions about email delivery or any QuickBooks-related concerns, feel free to include them in the comments. We're here to assist you 24/7.