[Storyboard] How to reach the Storyboard operators / maintainers?

Hello, a while back I opened a story / bug on storyboard (https://storyboard.openstack.org/#!/story/2010689) about improving email deliver-ability. I am uncertain if that was the right place to raise this issue or if there is another channel. In any case, could someone kindly point me or this suggestion into the right direction? Regards Christian