I've added a new feature to the watchlist section of the website. You now have the option to subscribe to daily email notifications which inform you of recent sightings of vehicles on your watchlist.
You can subscribe (and unsubscribe in the future) from the watchlist page.
If you can't see the subscription box, it probably means you haven't added anything to your watchlist yet.
I hope this is of use to some! If there are any questions, problems, bugs or suggestions then please get in touch!