CVSspam can be integrated, to a limited extent, with Bugzilla. When a CVS log comment contains text like Fix for bug nnn, whereby..., the text "bug nnn" will become a hyperlink to that Bugzilla page in the generated email.
To enable this feature, you need to specify the location of bugzilla in CVSspam's configuration file
The marker %s will be replaced with the bugId from the log message.