If you click the Mark as Spam icon, the message will be marked as spam and moved into the spam folder. A good punishment for their reputation is marketing them as spam - the more such abuse complaints they get, the worse their domain reputation becomes. If youre given the option, click Unsubscribe and you will no longer receive messages from the mailing list. Indeed, a great suggestion to make sure it’s the same sender (you can check the from / sending domain). In Gmail, look out for an 'Unsubscribe' link at the very top of your email, and Gmail will remove you. You don’t want to click on any links within, so there’s no need. Some email providers recognize this, and have stepped in to make it easier to unsubscribe. If you can tell that the email is spam, on the other hand, you don’t need to open it at all. If you don't see these options, follow the steps above to block the sender or mark the message as spam. Answer (1 of 5): All good previous anwers. If the email is legitimate, then of course you’ll need to open the email to see and click on the legitimate unsubscribe link. Next to the sender's name, click Unsubscribe or Change preferences.Open an email from the sender you want to unsubscribe from.If you signed up on a site that sends lots of emails, like promotions or newsletters, you can use the unsubscribe link to stop getting these emails. Tip: If you blocked someone by mistake, you can unblock them using the same steps. When you block a sender, their messages will go to your Spam folder.
Note: If someone uses Gmail to harass, intimidate, or threaten you, they're violating Gmail's Program Policies. If you feel that you're in danger, contact your local authorities right away, and ask whether any cyber harassment laws apply to your situation.