The Postmark Inbound Contest was a contest where participants were asked to build an app that sends Google Alerts to Campfire using Postmark's inbound tools. The goal was to create a simple app, and the winner, Matt Gillooly, submitted a rails app that met this requirement. The app is designed to run on platforms like Heroku and allows users to easily send Google Alerts to Campfire by inserting keywords along with the campfire room. The winner's code is available on Github for others to try and contribute back.