title: Prometheus Data persistence and AlertManager Email Config
body: <p>I have a problem with Prometheus retaining data. I exporters that export metrics to Prometheus and i use prom dash to represent the data. But when i restart Prometheus i lose all the data of my metrics. </p>
  
  <p>And the other problem i have is ,I have configured prometheus to have trigger alerts and i am using alertmanager to send notifications. I have configure alertmanager to send notification of alert to my Email and Flowdock. But I Receive them on flowdock but not on my mail.</p>
  
  <p>Any help would be great!</p>