CPanel eMail Script SQL

Hi - I need a script to read paypal notification emails as they come in to my email service on my web account. From that email, one data piece needs to be extracted and then used in a SQL query for a simple SELECT query. Then the results of the query will be inserted in a form letter and forwarded to the original email address along with a stock business response and some instructions. I mentioned perl but any web script will do. Happy bidding!