Hi, @chrisiecornell.
I see this is your first question so let me take the time to welcome you here to the Intuit community. I'm here to share some information about customers/vendors email address in QuickBooks Online (QBO).
You can enter your customers/vendors email address on their profile. Once added, you'll no longer need to re-type this information when creating an invoice (for the customer) and a bill (for the vendor).
To update customer information, here's how:
1. Go to the Sales menu at the left panel, then Customers.
2. Select the customer's name, then go to the Customer Details tab.
3. Click Edit, then enter their email and Save.
To update vendor information, here's how:
1. Go to the Expenses menu at the left panel, then Vendors.
2. Select the vendor's name, then go to the Vendor Details tab.
3. Choose Edit, then enter their email and Save.
For your reference, you can also check out these articles for further guidance:
On the other hand, may I know what report are you referring to? Any additional details will be much appreciated.
That's it! Please let me know how it goes in the comment section below. I'm always here should you have any follow-up questions or concerns. Take care and have a good one.