15Five Slack Notifications Not Working

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Workaround available Web, Slack Updated November 13, 2026Based on 3 user reportsHow we research

Quick answer

If 15Five Slack notifications never arrive, the Slack integration is usually not enabled, the user has not added the app, or emails differ.

Most likely fix: Confirm the integration is enabled

How to fix it

Try these in order — the most common fix is first.

  1. 1. Confirm the integration is enabled

    1. As admin go to Settings > Integrations > Slack
    2. The button should read Manage, not Enable; enable and complete setup if needed
    Did this fix it?
  2. 2. Add the app per user

    1. Each user adds the 15Five app to their own Slack account
    2. Check which events send Slack notifications in the 15Five Slack app preferences
    Did this fix it?
  3. 3. Match emails

    1. Make sure the Slack account email equals the 15Five account email
    Did this fix it?
  4. 4. Check company notification settings

    1. Review Company-wide notification settings and the Slack Sharing Settings tab
    2. Disabling and re-enabling the integration preserves earlier preferences
    Did this fix it?

Symptoms

Slack appears as a delivery option but check-in reminders, High Fives or Focus Briefs never reach Slack.

Why it happens

  • Slack integration not enabled for the account
  • User has not added the 15Five app in Slack
  • Slack email differs from 15Five email
  • Personal notification preferences turned off

This guide also covers

  • 15five slack not working
  • 15five slack notifications
  • 15five slack integration setup
  • 15five reminders slack

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