My experiences do not really match: Some CV compiler website has been emailing me ever since I posted on the thread, and the opt out is "If you don't want to hear from me anymore, just let me know".

Except there's no MX record for the website (Image: https://elixi.re/i/oamrerwz.png ), so I can't reply to them asking them to remove my email from their list.

If the person behind those emails is reading this: Please stop, it's annoying and I will not give you my money, even with a discount.