Hey Ray!
You can use Postmark's Inbound system for this.
Then we parse each message, and send it to your server via an HTTP POST. From there you can do anything you want with the data since it's nice and parsed out for you.
To implement this from scratch, you'll need some development done on your side so you may want to contract a local developer to help you out.
Let us know if you have any other questions!
- JP
Postmark Engineer, Wildbit