Email marketing involves reaching out via email with regular newsletters or personalized promotional emails. The advantage is that the email is sent directly and specifically from a company to a particular person. This type of direct communication is not possible, for example, with messages delivered via algorithms.
To do this, a company generally needs the explicit consent of the recipients, because in Germany, promotional emails are only permitted without consent under certain conditions. The success of email marketing can be measured, among other things, by click-through rates, conversion rates, and, to a limited extent, open rates.