Although this is not the problem that I experienced, but how this happened. I never thought that unsubscribing news emails from one site might affect other emails from that site. The unsubscribed news email just simply did not recieve news from a platform, other important emails should still work normally. In this case, I think he unsubscribed with Gmail, right? Unsubscribing from Gmail may result in blocking all coming email from one platform    If he unsubscribes with the link in Email, I think it won't have any problems