I'd like to contact the maintainers of the HockeyApp plugin,
https://wiki.jenkins.io/display/JENKINS/Hockeyapp+Plugin who are listed as:
* Oliver Hoeltke (ohoeltke)
* Brenton Bartel (Brantone)
I've had a couple of pull requests pending for a few months and haven't received any replies when attempting to contact either maintainer (brantone via github comment on the pull request, and ohoeltke by email).
If no-one responds then I would be happy to step in, otherwise I will mark the plugin as up for adoption.
Thanks,
Simon