Build funtion for K2 system, email and alert notification email alert

Build function for K2 system I need 2 functions for K2 Joomla 1. I need function for alert email to user example " Thanks for you submit article in our website, your article will publish soon after revise", when user submit article or item to K2 (Joomla) when they click SAVE button. 2. I need function alert notification to user email when their article or item has been approved my administrator example " your article or item that you had been submit to our website, has been publish, here is a link to your article [login to view URL]" Please contact us as soon as possible