Extra security is required when you open official mail from a public authority. Logging in via the ID-port involves an identification process, and ensures that you are the person you say you are.
The ID-port has two security levels. The sender of an e-mail decides which security level must be adhered to in order to open an e-mail from them.
Contact the ID-porten user support team on telephone 800 30 300, if you have further questions about this.