Challenge
The repurchase cycle of shoes-the main item of Allbirds-is long, inevitably resulting in a low proportion of email revenue.
Solution
Utilizing Retentics’ AI, our team implemented various flows to proactively send emails to customers, enabling repeated purchases rather than relying on passive flows that wait to be triggered by customer actions.
Result
Because footwear naturally has a long repurchase cycle, Allbirds initially found that email revenue accounted for a limited portion of their overall sales. Working with Allbirds Korea, we helped them move from a passive "wait and see" strategy to a proactive model that predicts exactly when a customer is ready for their next pair.
By leveraging Retentics AI to implement intelligent reorder flows, Allbirds saw a 117% increase in conversion value, turning a "slow-moving" category into a high-impact revenue stream.
How did we run our strategy?
To break the cycle of infrequent purchases, we implemented three targeted strategies based on personalized purchase patterns identified from Allbirds’ comprehensive history:
The Set up: We moved beyond basic "Back in Stock" and "Abandoned Cart" triggers to maximize post-purchase engagement—the critical window for converting first-time buyers into loyalists.
The Logic: Instead of sending emails immediately after a purchase (which can be overwhelming), we integrated our replenishment date filter. This predicts individual purchase cycles to hit the inbox only when "buying mode" is reactivated.
Advanced Personalization: We bypassed basic "top-seller" recommendations in favor of gender-appropriate and category-consistent items tailored to each individual’s unique purchase history.
The 3 KPIs That Defined the Growth
These metrics highlight how AI-driven timing can overcome the challenges of products with longer lifespans.
KPI 1: Conversion Value Lift
What it is: The total increase in the value of sales generated through optimized email flows.
The Result: 2.2x Increase. By refining the timing and personalization of reorder prompts, Allbirds saw a 117% surge in the conversion value of their automated flows.
KPI 2: Reorder Revenue Share
What it is: The percentage of total email revenue contributed by optimized reorder flows.
The Result: 25% Increase. Retentics didn't just add revenue; it optimized the "share of the pie," making automated reorder messaging a significantly larger contributor to the brand's digital revenue.
KPI 3: Return on Investment (ROI)
What it is: The efficiency of the software cost relative to the revenue generated.
The Result: 21x ROI. Achieving a 21x return shifts the conversation from software cost to profit generation by capturing reorder intent that was previously being lost in the long intervals between shoe purchases.
Why "Proactive" Beats "Passive" Logic
The footwear industry often struggles with email marketing because brands wait for the customer to take an action. Retentics flips this script.
Filling the Gaps: Allbirds had established flows for abandonment but hadn't yet maximized the post-purchase window. By predicting the "pulse" of the customer, we converted passive recipients into active shoppers.
The "Bounce Back" Strategy: While many automated emails are sent too early, Retentics’ logic identifies the most suitable items for a second purchase and waits for the optimal window to suggest them. Even within the first week of launching this specific flow, conversion rates showed a significant increase.
Final Advice
After supporting the Allbirds implementation, the lesson is clear: long purchase cycles are not an excuse for low email revenue. By replacing passive flows with data-driven timing and personalized item recommendations, you can capture the "pulse" of your customer base and drive consistent, high-value repeat orders even when the gap between purchases is wide.
Case Studies
Copyright © 2026 Retentics. All Rights Reserved