title: To use sleep() or cron job
body: <p>I have this mail script I have to run a few times.
  To start the script I will use cron, but the script has to run 2 or 3 more times (with an hour apart). </p>
  
  <p>What's the best way to do this? 
  To use the sleep command for an hour, or at the end of the script, place some code, so that the script will create a new cron job to run it self after an hour?</p>
  
  <p>Thanks</p>