Email with external logo link

The self-hosted docker is internal only, so when I email an invoice to a customer he doesn’t see my company logo, because, obviously, the image is linked to my internal server. I want to change the logo image to an external link. Is it possible?

If I need to edit a php file, I’m willing to do that if someone could direct me to the correct file.

I’ve done it.
file is located here


I replaced {{ $logo ?? '' }} with my external link to my logo.

Edit Another Solution

just create a string at the top, something like this :


No need to replace {{ $logo ?? '' }}