The wpcrm_system_gdpr_delete_request_email sets the email address that the GDPR delete request email will be sent to. GDPR requires that an individual can request to have their data deleted, and this email will provide you with notice of the request. By default, the email will be sent to your site’s administrator, which is set in Settings > General > Email Address.

If you want someone else to receive this email, run this filter and return the appropriate email address.