How to include current timestamp in Email subject line

Grafana version: v9.4.3
OS: Ubuntu 20.04


Im trying to include the current timestamp or incident start time in email subject line so that each email is received as separate mail instead of thread/group.

The template that i tried.
{{ define “email.subject” }}
{{ .Status | toUpper }} - {{ .CommonLabels.alertname }} {{ .Alerts.Firing.StartsAt.Format “Monday, 2 January 2006 at 3:04PM” }}
{{ end }}

Subject that I see: I’m getting only the “FIRING - TestAlert”
“{{ .Alerts.Firing.StartsAt.Format “Monday, 2 January 2006 at 3:04PM” }}” part of the template is just returning empty in actual mail subject alert.

Any help in this would be appreciated. Is there any another option to send each email as separate one.