Slack Notifications

Connecting Slack

Fatal Error Notify can post error notifications directly to a Slack channel, giving your team real-time visibility into site issues.

Slack notification settings

To set up Slack notifications:

  1. Go to Settings » Fatal Error Notify » Slack
  2. Click the Add to Slack button
  3. Authorize the Fatal Error Notify app in your Slack workspace
  4. Enter the channel name where you’d like notifications posted (e.g. #errors or #site-monitoring)
  5. Save your settings

Per-Channel Error Levels

You can configure which error levels and plugin error types trigger Slack notifications separately from email and Twilio. This lets you set up different alerting strategies — for example, only critical errors via SMS, but all warnings and notices in Slack for detailed monitoring.

See Error Levels and Types for more details.

Action Buttons

Slack notifications include interactive action buttons that let you respond to errors without leaving Slack:

  • Pause Notification: Temporarily pauses all notifications for the specific error. Useful when you’re aware of an issue and working on a fix.
  • Pause This File: Pauses notifications for all errors originating from the same file.
  • Mute Plugin: Mutes all notifications from the plugin that triggered the error.

Paused notifications can be managed from the Paused Notifications tab in the plugin settings.

If you’d like to hide or customize the action buttons, you can use the fen_slack_show_actions and fen_slack_actions filters. See the developer documentation for examples.

Legacy Webhook Support

Older installations may be using a Slack incoming webhook URL instead of the OAuth integration. This still works, but we recommend switching to the Add to Slack OAuth method for better reliability and access to action buttons.