Hi Michael66578
With the Barcodes PRO addon, the barcodes are being added to order emails for every order item if you configure it that way in ATUM Settings >> Barcodes.
But if that is not enough for you, what you describe would need custom coding.
If you have a developer, you can ask them to assist you with this customization. If not, if you need an estimate for it, please open a private ticket:
https://stockmanagementlabs.ticksy.com/
Best Regards,
Salva.