hudson : map SVN credentials to emails
Under Post-build actions for your job, you can enable email notifications and check Send separate e-mails to individuals who broke the build.
Jenkins will accumulate user information from the SVN commits. There is possibly more dynamic ways to do this, but under People you will see user names Jenkins recognizes. You can configure the email address corresponding to each user.
This is valid for Jenkins 1.413 - don't know if this functionality is available in your Hudson version.