KMail How to declare a folder to contain a mailing list?

Hi there!
 
The previous version of kmail (4.4-something) offered to declare a mail folder 
to contain a mailinglist by parsing list-id, list-post, etc. It was easy to 
send a mail to a mailinglist just by right-clicking on the folder and 
selecting "new mail to mailinglist". How do I that with kmail 4.7.x?

Thanks,
     Alex

_______________________________________________
KDE PIM users mailing list
Subscription management: https://mail.kde.org/mailman/listinfo/kdepim-users