This is a simple plugin that displays a notification on the wordpress dashboard, along with a form to submit a help email.
See http://andypi.co.uk/2016/10/23/wordpress-dashboard-plugin/ for explanation.
See wordpress official subversion repo at: http://plugins.svn.wordpress.org/support-email-dashboard-widget/
Original plugin with hardcoded email / site details for AndyPi customers only.
Latest version with settings page to allow any site admin to provide a simple support dashboard.
svn log http://plugins.svn.wordpress.org/support-email-dashboard-widget/ git svn clone --no-minimize-url -s -r1638377 http://plugins.svn.wordpress.org/support-email-dashboard-widget/