Autoresponder for my Amazon Customers (Amazon API Required)

NOTE: Only bid if you have experience working with Amazon Seller Central API. I'm selling multiple products in Amazon, and I'm looking for a script that works as an autoresponder, so it automatically sends them emails depending on the time it has passed after the product has shipped from amazon, it must allow me to choose how many emails to send and in what time frames, for example: 1 email 1 hour after the product has shipped 1 email 3 days after the product has shipped at 3:00am 1 email 7 days after the product has shipped at 3:00am. I need to include Amazon Variables, like CustomerName, LeaveAreview Link, etc. Hopefully it can store my email templates in some database, then I just select which template at what timeframe. It needs to be installed in my server, I can do it if you provide clear instructions. It needs to be password protected. It needs to log stats of emails sent It needs to store all customers emails in database accesible via the script (for consultation only). I will provide the logo for the script, in terms of design it doesn't need anything fancy just functional and clean. Please make your best bid, as the budget is very limited for this script, there are many services offering the same for a few bucks a month. Amazon API knowledge is needed of course.