Announcements in Jira is an important part of the Jira administrators job. The balance between being annoying and not keeping the users properly informed is a thin line indeed. While Jira provide email and banner options, its still a blunt tool to use and sometimes you even wish for your Jira Project Leaders to have the power to keep their projects informed.
This is where Announcer for Jira can help. With it's flexible system it can inform users in many ways, including group selection, scheduled notifications, several types of notifications and more you can make your notifications as unobtrusive as your users need them to be. It's quite the tool to add to your arsenal of plugins and during upgrades and incidents your users will love you for giving them the power to be informed.