How Slack Rebuilt Notifications
Slack completely redesigned its notification system to address user overwhelm, migrating from four conflicting preference models to a unified system with three clear options. This architectural overhaul separated notification content from delivery method, giving users independent control over what activities trigger notifications and which devices receive push alerts.
Co-authored with Shilpa Kannan on the Slack Engineering Blog.
Slack completely redesigned its notification system to address user overwhelm. The team migrated from four conflicting preference models to a unified system with three clear options: "All new posts," "Mentions," or "Mute." This architectural overhaul separated notification content from delivery method, giving users independent control over what activities trigger notifications and which devices receive push alerts.
The redesign drove a 5x increase in settings engagement and reduced support tickets.
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