And if you open any of them, there is a convenient link to unsubscribe from them:

http://paste.click/fOAtyL

Are you saying they are opt out? because I think that is what you are saying? Way to miss the point.

No I'm saying you opted in, and can now opt back out.

didn't!

I can't help but notice that all of those come from amazon.co.uk. As evidence-free speculation, perhaps there's a problem at a lower level than "Amazon the company". This sort of thing would certainly help explain why some people are extremely upset about spam from "Amazon" and other people are taking the position "you're crazy".

You signed up to be their customer, and you can turn these off. That they do this by default isn't ideal, but it's not spam - you have a business relationship with them.

it is spam.

just because i signed up for amazon.com, doesn't mean they get to spam me crap because they've buried a 2pt font unsubscribe feature that may or may not work over the course of a few weeks.