I receive emails from "TenTabs from Firefox". When i click on the unsubscribe button in the email, i get directed to the following page: https://www.mozilla.org/en-US/newsletter/existing/ When i enter my email and click "Send me a link", i get a new email in my inbox with the subject "Your email preference center link", and a button in the email that says "Email preference center". When i click on the link, it takes me to a page saying "Manage your Email Preferences". I didnt find Ten Tabs to unsubscribe. Even i umsubscribed from the 4 options available on the site but i still recieve emails every couple of days. I want to easily unsubscribe from TenTabs. I did some research and i think it is related to Pocket.