Hi,

I've recently switched to Ubuntu 16.04.3 LTS running Kubuntu desktop, from previously being on KDE Neon. I've had to switch to KMail from Thunderbird to be able to get system tray functionality, so now I'm having this problem transitioning.

I'm used to Thunderbird being able to globally not load external HTML content except for whitelisted domains, but it appears to be all-or-nothing in KMail. Is there a way to whitelist external content in KMail?