Welcome to the Community, @TonyM.

You'll be happy to know that you can add a Carbon Copy (CC) email address in sending an invoice. And I'd be glad to walk you through the steps.

1. Click the Gear icon, then select Account and Settings.
2. From the left menu, click Sales.
3. In the Messages section, you can enter the email address under Copy (Cc) new invoices to address.
4. Click Save.
5. Hit Done.

From there, you also have the option to enter a BCC to your email.

Fill me in if you have any other questions managing your invoice. I'll be around if you need any help.