Thanks for joining this thread, @HelloYall.

If you're referring to setting a default email address for BCC, this option is available in QuickBooks Online (QBO) Plus, too.

All you need to do is follow the steps provided by my colleague James in the conversation above.
 

Once done, the email address will automatically show up in the BCC field when creating invoices.

In case you wanted to personalize your sales forms and add the info that matters most to your business, you can create custom templates.

Please let me know if there's anything else I can do to be of assistance. Just place your concern by clicking Reply and I'll get back to you. Have a wonderful day and stay safe.