Show device offline time in Goodcloud timeline

Currently goodcloud only shows uptime, but not online/offline timestamp in timeline / history. Offline time is quite useful for troubleshooting

Even better, having an option to send device offline notification emails

There is a combined device online/offline email alarm setting, meaning you have to sign up to be notified for both status changes (online → offline; offline → online).

One nice feature is the X minute delay for the email alarm – which can filter out intentional reboots and temporary network outages.