The legal basis that legitimizes the treatment is your express consent. Your data will be kept indefinitely as long as you do not revoke the consent given or request the cancellation / deletion of your data or opposition to the treatment.
You can revoke your consent, as well as exercise your rights of access, rectification, cancellation / deletion, opposition, limitation and portability through postal mail to the indicated address or by email to the address firstname.lastname@example.org, providing a photocopy of your DNI or equivalent document and identifying yourself as a subscriber to the Newsletter, using the same email account with which you replied.
Likewise, if you consider that your data has been treated improperly, you can contact us (email@example.com) or you can file a claim with the Spanish Data Protection Agency (C / Jorge Juan, 6. 28001 - Madrid www .agpd.es).