In Denmark, certain rules must be observed, if a company wants to turn to customers by electronic means to promote or to sell products and services.
Basically, the company must have the customers consent before the company can send out marketing. If there is no consent marketing through electronic means as text messages or e-mail would be categorized as spam.
The spam rules do not apply if the messages sent has only a service content. However, the message must not contain any other information that may increase sales or awareness of the company. In practice newsletters, and invitations to competitions or events have been categorized as spam.