A method and system for notifying users of events. User activity of a user is monitored, based on user notification information in a storage location. The user notification information pertains to a scheduled event. In response to a detection, from the monitoring, of a change in the user activity, it is ascertained that the change necessitates notifying the user of the scheduled event due to the change impacting whether the user can participate in the scheduled event. Then the user is notified of the scheduled event. The user notification information in the storage location is modified, based on the detected change in the user activity, in response to receipt of an instruction from the user to change the user notification information in the storage location.