Email Addresses

Hello there, @gcotton.

It's my priority to share accurate details on how updating customers' information works to existing invoices (closed or open) in QuickBooks Online.

Once you update customers' information, it will not reflect any existing transactions you created. It only applies the next time you record an invoice for that specific customer. With that, the closed or open invoices still have the old information. 

If you want, we can manually edit the transactions, so we'll be able to change the email address and other details. Here's how:

1. Pull up the Invoice Lists report. Go to the Reports menu > In the search field, enter Invoice Lists.
2. Click the Customize button. Tick the A/R Paid box and select All.
   
3. Include all the details you want to generate on the report.
4. Set the reporting date correctly.
5. Hit Run report.
6. Click the invoice amount you want to update. 
7. Change info. Then, Save to reflect the changes.

If you want to modify them in bulk, you'll want to visit our QuickBooks Apps Store and look for a third-party application that can help get this done in a few clicks. Also, you can run the Customer Contact List report to review your client's details. This report will automatically store their updated information.

Here are some articles that you can check for additional tips and insights about QuickBooks reports:

• Get the most out of your financial reports.
• Memorize reports in QuickBooks Online

If you have follow-up questions, please tap me on my shoulder. I'd be glad to help you more, gcotton. Take care and stay healthy!