PHP email client

Hello, What I am looking for is to offer a website that people can freely signup and use as a real email address. A client where they can send/recieve emails just like Yahoo! Mail and Hotmail etc. Have it web based. But I don't just want any email client, it must be customizable and code added to it. So I am not looking to go to a www site and signup for them to brand it. I want to customize it entiley which does not just include the colours and format I mean customize the code itself and add to it as it won't just be a email site, it will pay you to send emails etc. Free or price is fine. I know of a few BASIC free ones but their very basic. If I can avoid allowing attachments that's fine or a section to allow or disallow ataachments. But when is ay basic their damn basic. I need one that you have settings, folders etc. Any ideas? Or anyone have the time to write such a client for me? I'm not really sure if the client can be or would be PHP based or datbase driven. I'd hope so because I could adapt to it better and work on it but if not I am willing to learn the bits. Time frame? Well if someone needs to write it I don't need it anytime soon. I want it to be stable and what not so needs to be fine and operate correctly. But if I can buy or get some code I can edit there will be alot of editing but that would be fine. Any ideas people? email will be in the form of username@adomain.com not like username@subdomain.adomain.com it's going to have it's own domain. Something like rock.com would be fine. Thanks! Jerry --------------------------------- Do you Yahoo!? Find a local business fast with Yahoo! Local Search