[Default Applications]
application/pdf=org.pwmt.zathura-pdf-mupdf.desktop
text/html=firefox.desktop
x-scheme-handler/about=firefox.desktop
x-scheme-handler/http=firefox.desktop
x-scheme-handler/https=firefox.desktop
x-scheme-handler/mailto=userapp-Thunderbird-FX0HU2.desktop
x-scheme-handler/unknown=firefox.desktop
message/rfc822=userapp-Thunderbird-FX0HU2.desktop
x-scheme-handler/mid=userapp-Thunderbird-FX0HU2.desktop

[Added Associations]
x-scheme-handler/mailto=userapp-Thunderbird-FX0HU2.desktop;
x-scheme-handler/mid=userapp-Thunderbird-FX0HU2.desktop;