Why can't I unsubscribe from certain emails?

We send you certain service emails or emails related to a contractual relationship, for example:

• because you have registered with us for a customer account and need our technical support in this context, or
• because you have concluded a contract with us or because you want us to contact you about a possible conclusion of a contract.

These e-mails contain important information for you, which we (must) send to you. For this reason, you cannot unsubscribe from such e-mails.

Our marketing emails, on the other hand, contain an unsubscribe link at the bottom of the email, which you can use to unsubscribe at any time.