Adding timestamp in Alertmanager/ Prometheus for alerts.

[Grafana Testing]

Hi, All,

I want to get the first failure time of the alerts firing in the prometheus using alertmanager at the subject level and using prometheus email body level. I have tried few ways using the below code snippets one's 

• {{ .StartsAt }} --> getting error if I use it individually in the subject 
• {{ range .Alerts }}{{ .StartsAt }}\n{{ end }} --> Getting multiple timestamp at a time in the alert email header.

Could anyone pelase help me with soultion.