KlaviyoEmail MarketingUnsubscribe Rate
Unsubscribe rate measures the percentage of Klaviyo email recipients who opt out of future communications after receiving a message. It serves as a direct indicator of message relevance, frequency appropriateness, and the overall health of the relationship between your brand and its subscribers.
Klaviyo metric
Unsubscribe Rate = (Unsubscribes / Emails Delivered) x 100
Unsubscribe rate measures the percentage of Klaviyo email recipients who opt out of future communications after receiving a message. It serves as a direct indicator of message relevance, frequency appropriateness, and the overall health of the relationship between your brand and its subscribers.
Full guide: definition, formula, and benchmarksHow to calculate Unsubscribe Rate
Unsubscribe Rate = (Unsubscribes / Emails Delivered) x 100
Why Unsubscribe Rate matters for Klaviyo users
Every unsubscribe permanently reduces your addressable audience. In e-commerce, where email is a primary revenue channel, rising unsubscribe rates directly constrain future revenue potential. Understanding which campaigns, flows, and frequencies drive unsubscribes is essential for sustainable programme growth.
Positioning unsubscribe rate in your metric tree alongside engagement and revenue metrics reveals the trade-offs in your email strategy. Aggressive promotional frequency may boost short-term revenue while accelerating subscriber loss - a trade-off only visible in the tree.
Driver
Conversion rate
Outcome · 58% contribution
Revenue
Understand and act on Unsubscribe Rate with KPI Tree
KPI Tree syncs unsubscribe data from your warehouse and tracks it per campaign, flow, segment, and frequency level. Position alongside engagement and list health metrics.
Assign RACI ownership to your email marketing manager. Set alerts when unsubscribe rates spike and track actions such as frequency caps, content improvements, and preference centre optimisation.
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Related Klaviyo metrics Ready to add to your trees.
Email List Health Score
Email MarketingEmail list health score is a composite metric combining Klaviyo list growth rate, engagement distribution, bounce rate, complaint rate, and unsubscribe rate to produce a single indicator of overall list quality. It assesses whether your subscriber base is growing, engaged, and deliverable.
View metricEmail Frequency Optimisation
Email MarketingEmail frequency optimisation analyses the relationship between Klaviyo sending cadence and subscriber engagement, conversion, and unsubscribe outcomes. It identifies the optimal frequency for different segments that maximises revenue without accelerating list attrition.
View metricEmail Engagement Scoring
Email MarketingEmail engagement scoring assigns a composite score to each Klaviyo subscriber based on their open, click, purchase, and recency patterns. It provides a unified view of subscriber engagement that goes beyond any single metric to identify highly engaged, at-risk, and disengaged subscribers.
View metricList Growth Rate
Email MarketingList Growth Rate = ((New Subscribers - Unsubscribes - Bounces) / Total Subscribers at Start) x 100
List growth rate measures the net rate at which your Klaviyo subscriber list expands over a given period, accounting for new subscriptions, unsubscribes, bounces, and manual removals. It indicates the trajectory of your addressable email audience and the sustainability of your acquisition efforts.
View metricEmail Deliverability Rate
Email MarketingDeliverability Rate = (Emails Delivered / Emails Sent) x 100
Email deliverability rate measures the percentage of Klaviyo emails that are successfully delivered to recipients' inboxes without bouncing. It encompasses hard bounces, soft bounces, and spam folder placement to assess the technical health of your email programme and sender reputation.
View metricExplore Unsubscribe Rate across integrations
All Klaviyo metrics
Abandoned Cart Recovery RateCampaign Performance ComparisonClick-Through RateCoupon Redemption RateCross-Sell Email EffectivenessCustomer Journey Flow AnalysisCustomer Lifetime Value (Email)Email Attribution AnalysisEmail Deliverability RateEmail Engagement Cohort AnalysisEmail Engagement ScoringEmail Frequency OptimisationEmail List Health ScoreEmail Open RateEmail Revenue AttributionEmail ROIEvent-Triggered Flow PerformanceFlow Conversion RateForm Conversion RateList Growth RateProfile Enrichment RateRepeat Purchase Rate (Email)Segment Performance AnalysisTemplate Performance OptimisationEmpower your team to understand and act on Klaviyo data
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