I can't get HBO max here (UK) and I got the email. I don't recall signing up for anything.

If I get a moment I might GDPR the info out of them but honestly loads of spammers have my email it's nbd.

e: Going by past emails someone decided to change their account's email to mine (which HBO was fine with, no confirmation required, hope the user can still use their account).. Don't you just love end users.

Sounds like it could be the scam where they put in your email address and hope that you pay the bill for them:

https://jameshfisher.com/2018/04/07/the-dots-do-matter-how-t...

Ooh I'd not come across that one. Cheeky bastards (if so)

Be glad! Sounds like you could have a subscription for free.