Alerts are notifications in e-mail when certain events occur in your team project. You can subscribe to alerts for yourself or for others, and can select to receive alert messages in either HTML or Plain Text format.
You can select to receive an alert when certain events occur. For example:
Your work items change.
Anything is checked in.
A build status changes.
A build finishes.
Alert subscriptions are stored on the server by team project, and you can add different alerts for each team project that you have permission to open.