Event Sources View Reporting to Graylog

Hi All ,
I’m newbie for Graylog configuration. I’m trying to understand and look for configuration option which would show me the Event Sources configured and reporting to graylog. We are running on Enterprise 3.0 version .

May be email notification when those event sources goes silent .

Cheers !

the new alerting in 3.1 can be configured for that - but the alerting in 3.0 is not able to make this wish happen.

We moved to 3.1 , Please help me with the configuration link or the steps . Thank you !