Today, In this method we would share how can you stop emails from a mail address, if you signed up for that websites

1:Check the Unsubscribe link at the button. If you get an email from the mail address, check for the Unsubscribe link at the bottom. The link is added from the sender. This is not automated. If the company don't want, you won't recieve a link at last. If there is a link, click and then click unsubscribe

2:Use block sender for gmail chrome extension to block emails. 

3:Report the email. Once you report an email, any emails from the sender will be added in the spam box. You won't need to delete the email one by one. You can delete all emails by clicking "Empty Spam". This won't block emails from a sender permanently.