If they do sent out some emails after you had unsubscribe or make yourself excluded then it is really just unethical for them to continue on sending out those emails but if you are really serious on quitting gambling then you would just simply put those emails to spam so that you wont read it out or simply make out new email for you to make use and dont intent do access those old ones to get rid of those things.It cant really be avoided that there might be some instances on where you do experience these problems. Exploits and vulnerabilities are really very common.
If we really want to unsubscribe, it means we are really serious about it and the company should not continue sending promotional emails to those who have stopped.
Sometimes problems like that can occur from the subscription email provider itself and not from the gambling company because I once ensured that I had unsubscribed from one company. However, a week later, there were still emails coming in from the previous company. When I repeated the process of unsubscribing and all complaints to the company, then the promotional email really stopped.
Every company is for surely keeping our email addresses and they've got a lot of purposes on it. And it's not just the companies that we used to sign up are the ones keeping it.
If there's someone who get to see it and they have ideas and database of keeping it, they'll sell it to the other parties. That's why we have no idea where these ads and promotions are coming from despite we just signed up for a few websites before.
Selling emails is nothing new because it has been around for a long time and I once saw someone selling a database of emails from multiple subscribers on a website. If the company buys it, they will have a lot of potential customers who can become their regular customers.
Sometimes we get promotional emails from a company that we don't know and don't feel subscribed to by their company. If there is such an email and we don't feel subscribed, we better delete it immediately and if necessary, we can block it.