OK, I've checked in the updated Patchwatcher source http://code.google.com/p/winezeug/source/detail?r=177 and have turned email notifications back on.
I also told it to rerun the most recent 11 patches, just to test that it's sending the good patches to http://groups.google.com/group/wine-patches-filtered again.
The results page http://kegel.com/wine/patchwatcher/results/ looks nice and green; the blacklist at http://winezeug.googlecode.com/svn/trunk/patchwatcher/blacklist.txt filters out all the tests that tend to fail on my test machine infrequently enough that they show up in the five baseline test runs, but frequently enough that they caused bogus failure reports in the few hundered patches I've processed.
It would be *very good* to whittle that blacklist down to zero. I should update http://bugs.winehq.org/show_bug.cgi?id=9916 with a script that runs just the problematic tests over and over again. (Or maybe I should start a new bug, that one is pretty long.)