Hello kenny,
Yes I am running a subscription service called GHJobs Subscribe. Here is the repository link - https://github.com/ghjobs-subscribe. I wrote this SDK as a component for using in backend. As for 'GHJobs Subscribe', I have all the pieces in place except for a service that reads my BoltDB file, gets the jobs from Github Jobs (according to subscribers' preferences) and sends an email as scheduled. GHJobs Subscribe is in pre-release mode right now; that means that you can put in your email, subscribe, and manage your subscription.