Alerts: Email Notifications with custom message

Hi,
Is it possible to send Alerts with additional custom messages?

For example:
In the below Email Notification of Alert, I would like to add

“To fix, please restart prdhost001 server”

is that possible?

Thanks,
GaMa

Alert Name: MyNewAlert
Alert Expression: ((extrahop.device.http_server:status_code?^500$) over 30 sec) > 1 (units: 1 min)
Value: 2.0
Alert Time: Fri, 10 Jun 2016 14:22:30 (PDT)
Device: abcd.org
MAC: None
IP: xyz.xy.x.x.

Have you tried filling out the Description property in the alert configuration?