Re having a smart meter installed.

Morning, Brin.

I had a similar email from my energy provider over two years ago. I informed them that I'd had new kitchen units fitted and my electricity meter was visible but at the back of and below one of those units. For some reason they did not want to know after that. I asked them to record that fact.
For what it's worth smart meters are really about more control over end users. That's not just my opinion. One of my friends goes ape about the mention of smart meters and 'Alexa'. The latter is a conversation for another day. Lol.

Hope this helps.
Spud