How are you running the VMs, with VirtualBox? I can’t say I’ve run a DE on a VM very often, but it’s always been under libvirt and I’ve not seen segfaults. I don’t disbelieve you, but I wonder if its the hypervisor.
Not sure why you’re fixating on Kmail; Thunderbird works fine on KDE and is the preferred choice across most distros IME. I’d use it before Outlook even if it were available on Linux.
How are you running the VMs, with VirtualBox? I can’t say I’ve run a DE on a VM very often, but it’s always been under libvirt and I’ve not seen segfaults. I don’t disbelieve you, but I wonder if its the hypervisor.
Not sure why you’re fixating on Kmail; Thunderbird works fine on KDE and is the preferred choice across most distros IME. I’d use it before Outlook even if it were available on Linux.