Mail about to get a lot slower.

I am not bothered by any of this. I expect crappy mail service so there is really no frustration from it being just that. It’s a government entity full of (mostly) grumpy employees doing a thankless job of delivering an endless supply of crap. I have come to like the email with an image of what is coming though. It’s yet another invasion of privacy but what isn’t these days.
Why is it an invasion of privacy? It's optional, so what's the problem?