Patterns · friction reduction
Cart Save
Mechanisms that recover abandoned shopping carts — email sequences, push notifications, or SMS reminders sent after a user adds items but does not complete purchase. Cart abandonment averages 70.19% globally (Baymard Institute 2024), making recovery automation one of the highest-ROI interventions in ecommerce. A 1% cart recovery improvement on a $1M GMV store is approximately $10,000 per year in recovered revenue.
When it works
Ecommerce stores where users have added items to cart. Most effective within the first hour (email 1), then 24 hours (email 2, optionally with discount), then 72 hours (email 3, final offer). Only works when email or push contact was captured at a prior point in the funnel.
When it backfires
When abandonment is product-related — wrong item, wrong size, out of stock — rather than friction-related. Recovery sequences cannot fix a product mismatch. Over-aggressive sequences (4 or more emails in 48 hours) generate spam complaints and list unsubscribes that cost more than the recovered carts.
Ethical notes
Cart recovery email requires explicit GDPR and CCPA consent for EU and California users — adding an item to a cart does not constitute consent for marketing email. Ensure the checkout flow captures explicit opt-in before sending recovery sequences. SMS recovery requires even stricter consent standards.
Examples in the wild
Klaviyo standard flow; email 1 is highest-converting because the user is still in high-intent window; email 3 with discount is last resort to avoid training customers to abandon for discounts
Push opt-in at cart-add stage; recovery rate for opted-in subscribers; zero email required — works for anonymous users who opted in to push
Facebook and Google showing exact abandoned products with price; higher CTR vs static ads per Criteo research; works for users who didn't provide email