Opening Mails in Thunderbird (under Fedora 23 and older versions)
Each time I receive mails in Thunderbird, I can open them without any
problem, but ONLY as long as these mails remain INSIDE the Thunderbird-GUI.
But as soon as I store a mail OUTSIDE that graphical user interface,
e.g. on a usb-stick or elsewhere on a hard disk, it is impossible to
open again that same mail with Thunderbird. I then use Sylpheed because
there's no other way.
Does anyone know what has to been done to get mails opened with
Thunderbird OUTSIDE the GUI?