My wife has been using a email program called incredimail for long time and i saw the new version that she upgraded to and it really really looks nice , fast and has some very nice festures.
it has great filter that you can filter each type of attachment , word , pdf .pictures , video, Zip files just by pressing on tab . (see pix).
Here is what it could look like in Notes
Now i know about FewClicks and they do some of this . Can you make Lotus nine be like this ? Lotus Dev ? are you there ? Ok let do ideajam on this.