Customized email script for paid users

Hi there, I am looking for someone to take a open source(free or paid) script and customize it to what I need. I need the script so I can offer email services like google...but better. I will not discuss any further. Please advise on the following points: 1. What is your expertise? 2. Have you done similar projects? 3. What is your experience with script customization? 4. How creative are you? 5. What ideas do you have to develop a email service that is better than google? 6. What is a good estimate for this project (time and dollar value)? Remember, this is not to make a email client with more features, but probably to make a very easy to use, great design and a secure service. Simple and powerful. All generic responses like "I am interested" will not be responded to. Response to all the 5 questions is required. Thank you and all the best! gt