nominative determinism
I mean so is control d a set and forget. Even more so because they manage any changes and workarounds the companies come up with. Its basically designed for this. Having tried both options its my preferred option.
Set your country to Albania, Moldova, or Myanmar and you wont get ads on youtube.
Yes I do use opnsense and it was more annoying than control d. I tried both options.
One way I have reduced my subscriptions is by using control d. I know vpns are popular on lemmy but I found it an annoying to have to have a vpn for each device I wanted to bypass a country lock. Moreover it was annoyyng for some devices like apple tv that does not support a vpn. Establishing a vpn on the firewall broke other services that I needed to work locally in my country.
Control d on the other hand is a dns proxy tunnel so you just alter the dns on the devices you want to use it, and in their control panel you can have different countries per service - so if you browse youtube that can go via a country that does not allow ads. Bbc iplayer can be told to go via uk and so on. This is a lot more convenient and allows you to retain your country for all services except the ones you want to tunnel.
Unsure. Also unsure hat unofficial client you use.
I read this whole thread and didnt find a single person who uses teams inside ferdium like me.
Either a local SMTP server (less used) or an external service (more common). The SMTP is configurable but I believe most used option is ssl smtp over port 587.