if I click on a mailto-link in Vivaldi nothing happens. I could locate the problem in xdg-email which is used by Vivaldi to start the E-Mail program.
I checked in the terminal and this is the output of xdg-email:
[michael@michael-thinkpad ~]$ xdg-email mailto:email@example.com
/usr/bin/xdg-email: Zeile 619: thunderbird.desktop: Kommando nicht gefunden.
In line 619 I found “THUNDERBIRD” but it doesn’t seem to be the right command.
you need to change the default application:
My default application is Thunderbird. If it would be that easy…
It is that easy
On XFCE it works perfectly.
Doesn’t work for me in KDE.
I hope I’m not too late to the party but I just discovered why my Chromium and Vivladi were not working. There is an entry in ~/.config/emaildefaults called EmailClient[$e] and mine was set to thunderbird.desktop. When I changed it to just thunderbird my mailto links started working. Ie; xdg-email mailto:firstname.lastname@example.org opened up in Thunderbird.