title: send emails automatically and scheduled times based on sql query
body: <p>I am undertaking a project which will involve implementing a web based application with a backend database.</p>
  
  <p>One of the requests are to send emails based on rules e.g. if customer has not responded within a week then send an email to remind them to fill the details.</p>
  
  <p>Currently I am looking at using .net and sql server. Could any give me any ideas of how this can be achieved? Are there any third party tools that could do such a request?</p>
  
  <p>Thanks in advance.</p>