You can find this in the overview of newsletters.
This shows which newsletters you are subscribed to and how to manage them.
If you unsubscribe from all newsletters, you will of course stop receiving them, although your email address will remain in our database. However, it will not be used any more.
If you also want your email address to be deleted, contact us using the contact form. This is also the method you should use if you wish to know what personal data we have stored about you in our database.