Fresh out of the oven: a new plugin that sends email notifications to designated email addresses when new posts are pending moderation. It contains a settings screen where you can define a list of comma-separated email addresses that get notified.
https://github.com/tailorvj/pendingpostalert - fork me!
It’s the first working version, so please feel free to propose changes/enhancements/features.
We are going to deploy it on http://www.kifaya.org.il in the next few days.