Treatment responsible: CASTIEL CONSULTANTS, S.L. Purpose of processing: Maintain a relationship with the User and send the newsletter. Legitimation of the processing: Legitimate interest and consent of the interested party. Data retention: They will be kept for as long as there is a mutual interest or for the time necessary for the fulfillment of legal obligations. Recipients: Service providers or collaborators. Rights: Right to withdraw consent at any time. Right of access, rectification, portability and deletion of your data and the limitation or opposition to its treatment. Contact details to exercise your rights: castiel@castielgroup.com Additional information: You can view the additional information in our privacy policy.