Email Forwarding Project

I have a Magento site which creates and sends an email to the user who makes a purchase and to me. What I need to do it then forward that email to 1 of several different managers, to ensure that the order is approved. Here is an example: User A places an order online and received an email copy of the order. Supplier (me) also receives a copy of the order by emaill (BCC). I can set it up so the order also goes to another email address, and when that email comes in, I want a program to automatically figure out based on data I have in an excel sheet, which manager the user belongs to. Then the program will automatically forward the email to the appropriate manger for that user. The forwarding email will also give the manager the option to approve or not approve the purchase, easily. Their decision will be emailed back to the supplier. ---- Another option possibly is to create a plugin or something to add to my magento site to do this. But I will need a way to update the data list, incase there are changes to the manager, etc.