The two sets of rules are assessed separately: the GDPR for processing the data, the device rules for using the pixel at all. A tracked link or a technique without cookies is not automatically outside these rules either.
Roles: the company that decides why and whom it tracks is the controller. A provider that runs the pixel only on its behalf can be a processor; a provider that uses the data for its own purposes is assessed differently, as the AEPD did in the Mailtrack case.
What HawkOpen does today: a notice in every tracked email, a recipient page where people turn tracking off, download their data or request erasure, and estimates instead of claims that someone read the email.
Where rules that require consent apply, tracking may start only after that consent has been obtained. The link in the message lets the recipient withdraw consent later.
Sources
- https://eur-lex.europa.eu/eli/reg/2016/679/oj
- https://www.boe.es/buscar/act.php?id=BOE-A-2002-13758
- https://www.edpb.europa.eu/system/files/documents/2024-10/edpb_guidelines_202302_technical_scope_art_53_eprivacydirective_v2_en_0.pdf
- https://www.edpb.europa.eu/system/files/documents/2023-10/EDPB_guidelines_202007_controllerprocessor_final_en.pdf
- https://www.aepd.es/documento/reposicion-ps-00328-2022.pdf