KMail migration to another computer

G'day All Trinity Gurus, I am currently running KMail on a very old KDE/Trinity installation. /etc/issue shows "Ubuntu 10.04.4 LTS" which needs to be pensioned off immediately. I have installed tde-14.0.4-ubuntu-16.04.1-desktop-amd64.iso onto a newer computer. The installation seems OK and I managed to transfer the mozilla bookmarks to the new computer but getting KMail across has me stumped. Googling did not produce anything useful. :-((( On this old computer the KMail info seems to be stored in /home/glen/.kde3/share/apps/kmail but the new installation seems to have a very different directory structure. So, can the KMail settings and emails be copied to the newer computer? If anyone knows how, please let me know in GOF-speak (that is words of 2-syllables or less). Ta, Glen