Follow these steps to manage email subscriptions and unsubscribe from unwanted emails:

1. Identify where and how you subscribed to the mailing list or email account.
2. Check the email's 'preferences' or 'subscription services' options. Here you can modify the frequency of emails you receive or unsubscribe from the list.
3. Look for a 'unsubscribe' or 'opt-out' link at the bottom of the email. Click on this link to be removed from the mailing list.
4. Follow the website's instructions to unsubscribe if you can't find an 'unsubscribe' link.