Direct notifications work without additional configuration for all users that have successfully connected their JIRA accounts with Slack.

They can be sent in the following situations:

• you have been assigned to the issue
• you have been unassigned from the issue
• you have been mentioned in an issue comment
• issue that you are assigned to has been changed
• issue that you are watching has been changed
• issue that you manually subscribed to has been changed

Direct notification examples:

• JIRA issue is assigned/unassigned to/from you:
  
• your username is mentioned in any JIRA issue comment
  
• issue that you are assigned to has been changed
  

Configuration page

Open configuration page by clicking Slack settings in your Jira user menu (which is at the bottom left of your Jira screen).

Then you will see your personal configuration page where you can tweak you direct notification settings.

Issue subscriptions

In the configuration page you can manage existing subscriptions - change their settings or remove them

Subscribing to an issue is possible from the issue screen. On the right side of the screen look for Slack Discussions panel and then click the Subscribe button.