PHP Script to monitor, sort and resend an email inbox

Hello: I need a very simple script to monitor an email inbox (through a cron task) and check every email, search for specific pieces of content and then according to that, resend the email to another address. The script should have an easy to use interface or config file where rules would be easy to add, something like this: "sent you a message on GetAFreelancer" => freelanceralerts at [login to view URL] "Receipt for Your Payment to " => paypalpayments at [login to view URL] "Post feedback on project " => feedbackrequested at [login to view URL] "New Wordpress Blog" => wordpressnotification at [login to view URL] ... ... You get the idea. I can already do this with most email clients, including Outlook, but I want something that runs on a server so it can work 24/7, also later on I want to do some modifications to it so a php script fits better my intentions. This is a very simple project and there are already hundreds of classes and examples on stuff which can be modified to meet this. Please bid accordingly.