I made <a href="https://cantor.bubbleapps.io/" rel="nofollow">https://cantor.bubbleapps.io/</a> to address the same issue. It emails you when an an organization you follow creates a new repo.
How does this work?<p>There are a few other solutions to this problem at <a href="https://github.com/isaacs/github/issues/50" rel="nofollow">https://github.com/isaacs/github/issues/50</a>