Evolution Default Browser
Having had issues with Chromium earlier today I then find that Evolution is opening Midori instead of Chromium.
On the XFCE desktop there is a default browser option in Default Programs but that is already set to Chromium.
Evolution has no such setting, so it requires a setting using xdg-mine instead.
xdg-mime default chromium.desktop x-scheme-handler/http xdg-mime default chromium.desktop x-scheme-handler/https
If you use vivaldi, then this is the command for you
xdg-mime default vivaldi-stable.desktop x-scheme-handler/http xdg-mime default vivaldi-stable.desktop x-scheme-handler/https
Close and open Evolution and it's all set. Very simple once you know what is causing it.