title: Auto Call a function after say 16 hours after a post is posted in wordpress website
body: <p>I have a mail trigger functionality to implement, I'm using anspress wordpress plugin for question/answer thing and the scenario here is like, if a question is unanswered for say some 16 hours a mail should me triggered to a Expert Users group saying a post is unswered for such a long time.</p>
  
  <p>Now I have the code for sending email and i'm retrieving the posts also which are left unanswered, But how to trigger this function 16 hours after a post is posted.</p>