Web appointment book for multi user

Avg Bid (USD)
Project Budget (USD)
$100 - $500

Project Description:
This project is the design and coding of an online appointment book which will send out email reminders 24 hours before an appointment is due.

What the website must do:

Multiple user registration (name, address, email etc) + secure login

Allow user to buy credits for their account (via paypal/google API)
Allow user to decide how many columns & what the time intervals are in their appointment book
View/Edit entries appointment book.

Have option for timed email reminder

Make a backup of all their appointments

Allow them to mass email their customers

Drag/drop appointments (like google calender)
Reports of their customers (ie customers that have not made an appointment within a set time frame)

I would like the site to be built with security in mind from the ground up.? ?

I want the site to have a quick wizard to get the user started & most of all I want a site that is fast and easy to use.

I would like the site to be coded in PHP in english with a mysql database although other options will be considered.

This will be an ongoing project so there will be repeat business for the coder.

Thanks for your time.

Skills required:
Engineering, MySQL, PHP, Project Management, Software Architecture, Software Testing, Web Hosting, Website Management, Website Testing
About the employer:
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