wpcrm_system_gdpr_delete_request_headers

The wpcrm_system_gdpr_delete_request_headers filter returns the message that is sent with the GDPR delete request email. 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 filter returns an empty string, so no headers are sent. To learn more about the headers that can be sent, please refer to this document.