Thank you for that nugget, it’s not often you are offered a free service from a quasi governmental body, especially one whose very existence revolves around collecting as much money & by any means.
Maybe they are wanting to show their more humane side, after all you can look up some historic details on your cars.
However this could be a double edged sword; if you are blissfully unaware of this meeting with an emissions probe & its being rattled around your exhaust pipe until the day is all but upon you, your sleepless nights will be fewer than if you were to be alerted a month early.
Unless you are as fortunate as I who just chucked the car at the tester & walked away with first prize.