I am a paying customer and self hosting. I do not want to present my clients with crappy looking email templates that - on top of looking like spam from the early internet days - have a "powered by the most broken ERP" in the footer.

I am aware I can customise email templates in settings > technical > email templates.
Yet, as we all know, it does not actually let you customize the TEMPLATE. it lets you customise A PART OF the template (the inner text, really).

The whole email template still is following Odoo's weird style and features a "Powered by odoo" in the footer
It is all boxed into a great box, which has a nested white box, which then has the template content we can customise.

This is not "customisation". It is not what I pay for. And it is not what a (serious) company can throw at their clients.

How can these templates be FULLY customised please?
(and no, none of the available modules or third party apps actually do work. Also, it should not be necessary to use a third party app to debrand and customise something as simple and yet as personal as an email template)

@odoo: you already charge money for the service even if self hosted. You charge per user, even if self hosted. None of this generates ANY cost for you if self hosted. I am questioning your practice to ALSO force your labelling on paid, self hosting customers.

Thank you kindly.