I'm have developed this app myself and I respond to all support queries. I want to slowly improve this app by adding new features, so all comments are welcomed.
I was offering a pro account for just SMS messages, but I think that the pro account could also provide the email notifications about delays to your route as well as potentially informing you of alternative routes and other related delays.
Emailing you details that are different from an external contact is an interesting idea. I'm hoping to extend the interface to allow you to choose your actual stations, so alternate routes are easier to calculate.
At present that feature is available through the mobile app. I had considered that a value added service and as such you must buy the app. In addition to notifications you can also manage single journeys that you make outside your usual commute.