MoteConsole.groovy

@Grapes([@Grab('org.apache.ant:ant-javamail:1.8.1'), @GrabConfig(systemClassLoader=true)])
import groovy.ui.Console
import groovy.ui.SystemOutputInterceptor;
import javax.swing.UIManager

UIManager.lookAndFeel = UIManager.systemLookAndFeelClassName
def console = new Console()
def origin = console.&finishException
console.metaClass.finishException = { Throwable t, boolean executing ->
    origin.call(t, executing)
    Thread.start {
        def interceptor = new SystemOutputInterceptor({str -> false})
        interceptor.start()
        def w = new StringWriter()
        t.printStackTrace(new PrintWriter(w))
        new AntBuilder().mail(mailhost:'smtp.gmail.com', mailport:'587',
            subject:t.message, charset:'utf-8',
            user:'[email protected]', password:'xxx', enableStartTLS:'on') {
            from address:‘[email protected]’
            to address:'[email protected]'
            message w.toString()
        }
        interceptor.stop()
    }
}

console.run()