To comply with the General Data Protection Regulation, companies like SAP have run email campaigns to get consent to continue contacting customers. People who consented are trusting the companies with their information, and marketers must “do no harm” in the way they use that information, Mika Yamamoto, SAP’s chief digital marketing officer, said at Digiday's recent Programmatic Marketing Summit in New Orleans. Yamamoto also said GDPR gave SAP an opportunity to clean up its customer data, given that data, whether collected firsthand or bought from a third party, is not always accurate.Yamamoto discusses correcting inaccurate customer data, the marketer's role in retaining customers and more.