Thank you for joining us here in the Community,@knlrichter.

The Customer-facing email is the email you use wherein your customers can contact you. You can customize your invoice instead to remove your email address.

Let me guide you on how:

1. Select a specific invoice.
2. On the bottom part of the invoice, click on Customize.
3. Select Edit Current. 
4. Choose the Content tab.
5. Click the Pencil icon appearing on the upper right side of the invoice.
6. Under the Header, unchecked the box beside the email.
7. Click on Done.

You can check this article for more information: Customize your invoice emails.

I'll include this reference in case you'll need to send reminders to clients before the transaction date.This is available if you're using QuickBooks Online Essentials, Plus or Advanced: Schedule recurring transactions created with a template.

Please feel free to post in the Community if you have any concerns. I'll be here to help. Have a nice day!