Usability is improved by decreasing the number of notifications to be read in receiving mails including notifications of events. A notification of an event is sent. In one aspect, this comprises receiving, in response to occurrence of an event, a notification of the event; storing, when event data generated from the received notification matches a conditional expression in a profile associated with the event, the notification of the event in a queue associated with at least one of change management information corresponding to the event and a recipient of the change management information; and sending, when an earliest time out of transfer times set in respective notifications stored in the queue has come, all the notifications stored in the queue, to a client that is the recipient, as a single notification.