Students are responsible for accurately maintaining their demographic contact information via the University's web portal – Self-Service. The University considers each student's NDMU email address as the official, formal contact point. All official university correspondence will be sent to this address. Students should further maintain their physical addresses via the registrar's office as there are occasions when students will be contacted via the United States Postal Service. The University will consider all correspondence mailed to a student at their email or physical address currently on file to have been received unless it is returned to the sender.