I'm working in a Jira that I don't have admin access to. It's been a while since that's happened!
I wanted a way to get notified if anyone in the system opens a new ticket, so I could decide if I wanted to watch it or not. Jira makes this fairly straightforward with filters and subscriptions.
First, create a filter that picks up any tickets created in the last hour. I named mine "Recently Created"
Then, click details, and new subscription
Setup the schedule to be every 30 mins, 24 hours a day, and to not email you if there are no new issues
You'll get a well formatted email if there are new issues, and you can cherry pick the ones you want to watch