Welcome to the Community, karnot.
The option to add multiple email recipients to your invoices is currently unavailable in QuickBooks Self-Employed (QBSE).
You can refer to this article that will provide further information: Create an invoice in QuickBooks Self-Employed.
Having this feature would be beneficial to your business and help save time when sending invoices to multiple recipients. So I'll definitely pass your suggestion along to the right team for review. From there, they may be able to consider this in the future updates.
In the meantime, I encourage you visiting our blogs for any QuickBooks news and announcements. Here's the link for your reference: The QuickBooks Blog.
I'll also update you here once this feature becomes available.
Let me know if you have any follow-ups or other concerns. I'm always here to help. Wishing you the best.
