Hello, @davids2.

I know a way how we can stop emailing invoices in QuickBooks Online.

We can set the delivery options to None to end the emailing of invoices.

Here's how:
 

1. Click Customers from the left menu.
2. Choose the customer name and click on Edit at the top right corner.
3. Look for the Payments tab. Set the Sales form delivery options to None.
4. Hit Save.

See the attached screenshot below for visual preferences:

:
 

You can also check this article to learn more about how to add bank details to your invoices.

Moreover, here are some resources in case you’d like to add specific info to your sales forms and send them to multiple email addresses:

• Customise invoices, quotes, and sales receipts
• Email a sales form or report to multiple email addresses

Don’t hold back to drop a comment below if you have any other questions or concerns about QuickBooks features. I’ll be more than happy to help. Keep safe always!