The Courier API will be used to send notifications and messages through emails and texts. The first hackathon is launching next week, offering over $1K in prizes for participants who successfully integrate the Courier API into their projects. A tutorial is available to guide users through the process of sending multi-channel notifications using Node.js. The tutorial covers integrating the Gmail and Twilio APIs, setting up routing for single or all channels, and converting messages to Morse code using the Fun Translations API. Participants will be required to send a secret message encoded in Morse code via both email and text, with the first five successful submissions receiving a gift from Courier. The hackathon registration link is provided, along with additional resources and documentation for the Courier API and other relevant tools.