The below steps once enabled will allow you to receive text notification or e-mail notifications as your customers perform different actions once you send them listings.
1: Click your Name in the Top Right Corner of Matrix - see below
2: In the drop-down click the Settings button - see below
3: in the Settings menu click "Portal Notification Settings"
4: Select how you want to be notified E-mail, Text, Daily Summary or Timeline - below example shows how to enable notifications via Text