extract content from emails in qmail queue

I'm using an apache server with plesk 8.6 installed. I have configured a domain so that all Mail to nonexistent users is delivered to photos at mydomain dot com I need a php script that will be run by a cron every few minutes and perform the following: 1. find all messages in the inbox . loop through them and perform the following on each: 2. find the address(es) the it was actually sent to (will be something like photos 34 at mydomain dot com or photos 76 at mydomain dot com) - might be multiple addresses 3. extract the number(s) from the address in step 2 (eg 34 and 76) 4. extract the subject of the email as a string 5. extra the 'from' email address and store it in a string 6. extract any images or video attached to the email and store in variables 7. at this point, I will handle saving the images to the server, storing data in a database etc 8. delete the message from the mailbox