FEATURE: notify by email when there are posts from new users waiting to be reviewed

app/mailers/pending_queued_posts_mailer.rb

@@ -0,0 +1,10 @@
+require_dependency 'email/message_builder'
+
+class PendingQueuedPostsMailer < ActionMailer::Base
+  include Email::BuildEmailHelper
+
+  def notify(opts={})
+    return unless SiteSetting.contact_email
+    build_email(SiteSetting.contact_email, template: 'queued_posts_reminder', count: opts[:count])
+  end
+end