Courteous.ly

courteous.ly from courteous ly on Vimeo.

"Courteous.ly checks a user’s email inbox over a period of 12 hours. The analysis then determines your email habits and figures out what constitutes a heavy or light workload and updates your status every 10 minutes. This status is accessible via a link which you can distribute in your email signature, so your established contacts can keep tabs on when to send you mail or not. "

http://www.itpro.co.uk/634057/us-professor-develops-polite-email-tool

http://courteous.ly/