When I tried to use the $CHANGES token in Email-ext message body, it only
returned the name(s) of the SVN users, who have checked in files, not any other
details, such as: time of change, check-in comments, and, above all files. I
think it is a bug.

Also, is it possible to have different body messages for different build
statuses? E.g., return the $BUILD_LOG for failed builds, but not for successful
builds?