Jarrison Time has a notification feature to notify email recipients of devices going offline or coming online. The below steps describe how to set this up. Please note that the system should already be configured for SMTP in order for notification emails to be sent.
1) Go to Setup > System Configuration > Notifications tab
2) Enable the option for Notification via Email when selected devices go offline
3) Go to Access > Devices
4) Select the device/s you want to be notified of then select Online & Offline Email Notification and enter the email address the notification should go to
5) Restart the JTEngine from the computer that runs the engine
From the next time the engine pings devices (set under System Configuration > Engine tab) it will send notifications if it encounters any status change between a device being offline or online.