I have been looking to get involved with some of the Jenkins plugins' projects, and was reading the getting started guide on
jenkins.io.
There it tells me I need to register with the jenkinsci-dev google group by sending an empty email to the 'subscribe' email address. When I did that I got an email response nearly right away saying the Google group jenkinsci-dev doesn't exist. Have I missed something, or is maybe the link out of date?