This disclosure relates to a system and method for mass notifying recent visitors to a location. In one embodiment, the mass notification method can comprise collecting at a registration point, contact information from one or more visitors to a facility. The method can further comprise storing the contact information and a check-in time in a profile in a mass notification server memory. The method can further comprise sending a notification message in response to an emergency and as a part of a mass notification, to the contact information within each of the profiles containing a check-in time that is earlier than a mass notification time by not more than a predetermined period of time.