title: How to implement a custom solution on Shopify?
body: <p>Customers will purchase electronic docs through the cart, and once the purchase is complete, I need to code a solution to customize the docs, and email the output to the customer.  I can have Shopify sending all the pertinent information in the order to my email, but need a server or something to "catch" that, decipher the information I need, customize my docs, and then deliver (via email) back to the customer.  </p>
  
  <p>Just looking for guidance on where I can learn more about building out this type of solution. Recommended applications, software, etc?</p>