Simple Shell / PHP or Perl Script to delete bounced eMails

Hello, I need a simple shell or perl script that can delete bounced eMails in a mailbox. The server is running Centos OS 5.6 and eMails are located at: /home/email/webp5p/Maildir/cur While webp5p is the name of the mailbox. Message files inside of the folder are named like the following: [login to view URL] The script should search within the message text for certain criteria and if there is a match the message should be deleted. Examples: 1) Script should search for "hotmail" and "temporary" and all messages including these both keywords should be removed. 2) Script should search for "block list" and all messages including this keyword will get deleted. There are a total of 4 task the script should perform to clean up the maildir from bounced eMail messages once per day at a certain time. I can setup a cronjob to execute the script. I don't know what works best, it's up to you if it's a PHP, Perl or Shell Script. Thanks!