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We want to create a software like www.SendGrid.com -
It will have this function:
A. Signup system for users. Users should signup for free at first. Signup system should get First Name, Last Name, Username, Password and Email Address. It should use the username and password from signup and create a SMTP user on the server, with the same credentials.
B. Deposit payment system for sending emails (users don't have a monthly plan, they deposit money in their account to cover their emails). This should be be compatible with Authorize.net and Paypal. There should be a variable that shows the amount of money in a user's account, when they are logged in. This should be displayed in the admin.
C. User should be able to see how many emails their account has sent. This information can be drawn from the Zimbra mail server. Zimbra has an API for this, very simple command. It should show the user how many emails they have sent in the client area.
D. When user has ran out of deposit money, there should be an Auto-Add option, so that our system can auto-charge their cart a "re-up" amount, that hte client can select - minimum $20.
E. We will do the design - you do NOT have to design anything, we are designers :)
We are looking for someone who can really do this job. If you are capable and we award you the job, we will only pay milestones when we have seen some work or a finish product. Until then, we will not pay milestones.
D. There should b