Yes. Jira notifications are configured at the issue (ticket) level, project, or for the entire system (instance) of your Jira. Many of our user's set up rules for each project based on specific types of Jira issues and specific events for those issues they want to be notified about inside Jira. The Filter tab allows you to select which types of Jira issues inside a project (or instance) you want to send notifications for. You can even use JQL to filter down to very specific types of issues. On the events tab, you can select which types of activities (events) on a Jira issue you want to send a notification for. So there's no need to have notifications for every issue and every event - you'll want to pick the things that really matter to your team.