

I can see them doing that, I use a DNS ad-block (Adguardhome) with plenty of filters and last night, I spotted that they were able to inject two ads (standard one to the right of the channels and one at the bottom below the menu for the new Minecraft movie when they changed my background. So, they are finding ways around this stuff. I simply disabled the Sponsored themes. We are on the fence about replacing the TV later this year but not 100% sure just yet. It’s been quite buggy randomly rebooting when switching sources and other things.
To make it seamless so you can still Thunderbird, someone made a Docker image of it here: https://hub.docker.com/r/kebles/wanderbird But, you can probably find a newer release somewhere newer than 4 yrs old like this one. :) The point is, if you are wanting to keep it in the Thunderbird umbrella, then it’s most likely been Dockerized.
I’ve Tried Cypht recently, but if you are using Gmail, it has a conflict there so it won’t work out of the box without some extra work I think.