I got your back, sdamato.

Let's check if the email address is set up in your customer's profile. This will allow email to automatically populate when your emailing customer invoices.

Here's how:

1. Go to Sales.
2. Choose Customers.
3. Select the customer you're doing invoice to.
4. Verify and check if there is an email in the information window.
   
5. Click Save.
   
   

If email is there but still unable to populate the email address, let's check if this has something to do with the browser you use. Browsers have caches that temporarily save your browsing data. When it's full, you could experience behaviors in QuickBooks like this.

Below are some of the keyboard shortcuts that you can follow:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Shift + N
• Microsoft Edge: Ctrl + Shift + P

If it works, you may want to clear the browsing history of your regular web browser. This will remove previously stored browsing data that might have caused the issue. Otherwise, you can try using other supported browsers to be thorough.

Here's an article you might find helpful when receiving payments from invoices: Record invoice payments in QuickBooks Online.

I’m looking forward to the success in getting back automatically populating email addresses when emailing invoices. I’ll be right here anytime you have other concerns. Have a good one.