http://nlcreator.svn.sourceforge.net/viewvc/nlcreator/
The project checked in the qt and c++ code for a qt email client just now.
Based on LH mail. Mail engine is the (private) Mail client, and Qtnewslettercreator is the (business) mass mailer, see homepage.
currently sending mail works file, pop3 mail retrieve is currently worked on.
Please have a look, if you can help to compile or if you see any bug.
Thx.