It’s mentioned in the article. GNOME (and KDE) supports it, but has the same problem as Windows where they only let you configure it from major branded provider

It’s mentioned in the article. GNOME (and KDE) supports it, but has the same problem as Windows where they only let you configure it from major branded providers. You can open Evolution, configure it there, and have it work globally in all GNOME apps, but this is poorly documented.