Kinda depends on how old-school you are looking for, but Splitgate is a fun free modern take on the arena shooter genre

^^ Heroic worked really well for me as well. I used it to get Affinity working. (Apart from using it for Epic Games and GOG ofc.)

I’ve tried Vivaldi mail. Might be something for you, but I just didn’t like the UI so I’m also still using the web interface for each. Looking forward to seeing others answer as well.