Is it the sort of newsletter to which people might have been nonconsensually subscribed in large numbers and consider as spam?

It's a London music venue's "what's on" mailout, and I think I deliberately signed up for it (it would've been a plausible thing to do when I was going to more gigs in London), though that doesn't mean that they didn't also subscribe people nonconsensually... But why attribute to malice what can be adequately explained by a general arse/elbow confusion? :)