How do i remove the quickbook branding from invoice mail?

Glad to see you in the Community space, @support45.

Let me share some information about the QuickBooks branding on your sent invoices.

Currently, the logo for QuickBooks which appears at the bottom of the invoice is embedded automatically by the system. There isn't an option to remove this entirely when sending out the invoices. Your customer can only hide the display images once he/she receives the email. 

I'll include this guide for more details about what content and design you can modify: Customise your invoice emails.

You can also visit our blog for the latest news and updates regarding our product. Keep me posted if you have other questions or concerns. Have a nice day.