I use plugin to generate config file for integration machine. I don't want to manually change generated file, thus I need more flexible configuration for plugin. I've made following changes to the plugin:

• added possibility to configure location of maven
• added properties buildresultsurl, spamwhilebroken
• added possibility to configure css and xsldir for htmlemail
• added possibility to configure failure and success address
• added generation of maps based on properties like this:
  maven.cruisecontrol.mail.maps=developers
  maven.cruisecontrol.mail.map.developers=dev1, dev2
• added arifact publisher

I think this changes can be helpfull for others.
I provide patch containing this changes.