Plugin/app/hook for nexus invoice adjustment

Hello,

I am looking for someone who can make a plugin/app/hook which allows me to add text to mailed Nexus invoices.

You can currently edit the header and footer text but that is only for the printable invoice version. I need to add my company number and tax number on the invoices I send, I am required to do so by Dutch law. So when you pay for something you you get an invoice on your email, I want to be able to add/edit the header and footer text of that invoice version.

Is anyone interested? I think this would make a great marketplace app, as all Europeans currently have this issue and IPB sadly doesn't care about EU customers.