Generateing Email HTML from templae and JSON data

Hi, Need to write a back-end java module which populates email templates as attached with data from JSON document and returns an HTML stream/file. Following needs to be done 1) Generate HTMLs for the templates as below a)Welcome [login to view URL] is amost a fixed template. Only user's first name would need to be populated and would be dynamic b) Saved [login to view URL] is almost a fixed template. Only user's name and itinerary name need to be populated c) Final [login to view URL] is a dynamicall generated HTML. All of the data and images would need to be populated from a JSON file. All data and Image URL's shall be available in the JSON and dynamic HTML as in the template needs to be created. ALl Assets , logos, and Style sheet and imageURL's shall be provided Java Module needs to do the following 1) Provide a handle to call appropriate template, pass the values/objects required for the template (as above) and then construct an HTML [login to view URL] which renders the populated template as attached 2)AS always please ensure that alignment and layout is adhered to, which would required a bit of testing over multiple JSON objects (about 50-100 in number). JSON objects for the testing will be provided 3) JSON objecet provided for the template shall be about 2-3MB. Class file for the object conversion shall be provided. ANy other details, feel free to ask Regards Vikrant