Automate Klaviyo List Management with Decay Detection

Maintain a healthy Klaviyo email list and protect your sender reputation with this automated decay detection workflow that runs nightly to identify and suppress unengaged subscribers before they damage your deliverability.

What this workflow does

This comprehensive Klaviyo list management automation fetches your entire audience and applies sophisticated engagement scoring to every profile. Each contact receives a 0-100 engagement score based on days since last interaction, then gets classified into four distinct decay tiers: Active, Moderate, High, and Critical. Profiles that haven't engaged for 90+ days are automatically bulk-suppressed through the Klaviyo API in efficient batches of 100.

Every morning, you'll receive a professionally styled HTML email report containing complete tier breakdowns, run metadata, and engagement statistics. All profile data and workflow results are logged to your Postgres database, creating a comprehensive audit trail for compliance and analysis. Built-in error handling ensures any workflow failures are immediately caught, logged, and reported via email alerts.

Use cases

• E-commerce stores maintaining clean customer lists to improve email deliverability rates
• SaaS companies preventing engagement decay from impacting sender reputation
• Marketing agencies managing multiple client Klaviyo accounts with automated list hygiene
• Email marketers requiring detailed engagement analytics and historical tracking
• Compliance teams needing audit trails for email marketing activities

Technical details

Built with n8n's core automation nodes including conditional logic (If), data transformation (Set, Code), Gmail integration for reporting, and Postgres database connectivity. The workflow leverages Klaviyo's API for both profile retrieval and bulk suppression operations.

Requirements: Active Klaviyo API key, configured Postgres database, Gmail OAuth2 authentication

Nodes used: If, Set, Code, Gmail, Postgres, Sticky Note

Deploy this workflow to transform your Klaviyo list management from reactive cleanup to proactive engagement optimization, ensuring your email marketing maintains peak performance through automated decay detection.