Making kmail5 work from kmail-1.9 mails?

Greetings All;


In my quest to get a working email agent, first question is "how do I get kmail5 

to recognize and read, about 7 gigs and 45 maildir folders worth of old kmail-1.9 mail"?


Ideally it should create folder entries in the left panel simply by finding the folder in 

/home/$me/Mail, as it is already there, but currently invisible to kmail5.



Can this be done?



Second question is:How do I get it to fetch a mailfile in /var/mail/$usrname.


Thank you all.


Cheers, Gene