Abstract: A mail notification system that is operable to alert a user when mail has been deposited into the interior of a mailbox being monitored by the mail notification system. The mail notification system further includes a base station having a controller that operates an audio speaker and a light. The base station further includes operational controls such as a power button, a reset button and volume controls for the audio speaker. A monitoring unit is placed within the interior volume of a mailbox. The monitoring unit includes internal power supply and a controller. The controller provides operation of a sensor wherein the sensor is either a motion sensor or a photo sensor. The monitoring unit functions to transmit a signal to the base station subsequent the detection of motion or an increase in the light within the interior volume of the mailbox.