Please be advised you can unsubscribe from the email notifications on your own.
To do so:
1. Open one of the emails received from Words Booster and scroll it down to the bottom of the page.
2. You will see the following statement "You can refuse to receive news and special offers by unsubscribing from these emails".
3. As soon as you click "Unsubscribing", you will be forwarded to the browser's page where you should tap on the "Confirm" button.
4. Once pressed, you will be unsubscribed. On the same page, you can also re-subscribe by clicking the "Click here to re-subscribe" button.