Customer controlled email set-up

I want a script, probably in perl to place in my public folder on my web site that will allow users to set up their own free email account on my server space. I am a web-hosting reseller, and many of my hosting packages include unlimited email accounts. The issue is that some of my customers want to offer free email accounts to their clients so that they will have to come back to my customer's home page to log in - and in the proccess they view my customer's advertising and links on the same page. My customers do not want to have to manually enter or authorise each email set up, but they do want final control to delete and or limit storage and bandwidth. I need a script that can be accessed or called by a form/post that will set up the email account, and another that will log the email user in - all from a home page with no intervention by the site owner. My hosting accounts include cPanel version 10.0 as well as webmail (Neomail, Horde and Squirrel Mail). I can supply a temporary dummy website as a testing bed to the winning bidder. WE are just starting out on theis project and cannot afford a huge coding bill - I hope that this will be relatively simple for an experienced coder. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Linux servers