Best way to configure email notifications for issue transition?

[Colleen Tanner]

Basically, I need to have email notifications sent to members of an email whenever an issue transitions from "Investigating" to "Confirmed" . I tried to use a project automation, but the email doesn't go through.

I was wondering if I could create a group and add the necessary people, then set up a workflow post-function that would send out the email to the group after the transition, but I'm not sure if this is possible...? 

Also, I know there are notification schemes and I could copy from the default but I'm not sure how I would go about configuring this type of event, or if it's possible to do it this way. 

Andy advice or resources are welcome.