ExAlert is an add-in for Windows Messenger designed to inform a user about new messages received in his/her mailbox on the Microsoft Exchange 2000 server. ExAlert works together with Microsoft Outlook. When a new message is received in user's mailbox, the Messenger shows pop-up window with message sender's information. Clicking on the notification window opens Outlook window with the new message. The ExAlert add-in is linking the Messenger (by providing it with information about new messages, number of unread messages in user's mailbox, and responding to its commands to open a message for reading), user's mailboxes on the Exchange server (by subscribing to new message notifications) and the Outlook mail client (by opening Outlook folders and messages upon Messenger's request). ExAlert not only provides for more rational usage of the system resources, as with it there is no need to keep Microsoft Outlook constantly working, it also saves your time; it is here to help you solve your tasks in a faster and more effective way.