This error can result in a hefty fine. A small mistake when sending an e-mail can quickly cost thousands of euros. You can find out here how you can avoid getting into a sticky situation in the first place.
At least since the introduction of the General Data Protection Regulation (GDPR), all sorts of legal stumbling blocks have been lurking in the handling of personal data. Such a mistake can also happen quickly when sending e-mails – and without realizing it.