I was the one of engineering DRI's for this project, specfically on the Mail end. I successfully created the architecture for the macOS end connecting Mail and Safari together through an XPC process that can provide codes to Safari once recieved. Our team was able to deliver this feature for iOS and macOS working with various teams like WebKit and Data Detection to provide a seamless experience. Not only delivering the feature in the US but adapting it for international use as well.