The MailetDocs plugin for Maven2 finds all mailets and matchers (as defined by the Mailet API). It generates reports on each and then combines all into a single catalog.
To include the generated documentation, this should be included in the reports generated for a project:
<reporting> ... <plugins> <plugin> <groupId>org.apache.james</groupId> <artifactId>maven-mailetdocs-plugin</artifactId> <version>0.1</version> </plugin> ... </plugins> </reporting>