Seven flows, the published numbers behind them, and the behavioural reasons they work, built entirely from Klaviyo, Baymard, Omnisend, Litmus, and Mailgun's own data.
The $3.65 vs $0.11 gap
Klaviyo's 2024–25 benchmark reporting contains a single data point that explains why email-automation flows dominate ecommerce revenue stacks: the average Abandoned Cart flow generates ~$3.65 in revenue per recipient. The average one-off marketing campaign sent to the same subscribers generates roughly $0.11 per recipient.
That is a ~30× gap on the same list. Not because the subscribers are different, and not because the products are different, the only variable is timing. A flow reaches a subscriber at the moment their intent is highest (cart abandoned, product viewed, order just placed). A campaign reaches them at the moment the brand is ready to send.
What follows is a benchmark-led walkthrough of the seven flows every ecommerce email program typically considers. For each flow: Klaviyo's published performance numbers (where they exist), Klaviyo's own recommended cadence from the Help Center, and the behavioural-economics principle the flow exploits. The citations are live links to the original sources.
Klaviyo's published flow-level benchmarks
Klaviyo publishes flow-level open rate, click rate, placed-order rate, and revenue-per-recipient data for the four flows they consider foundational. Win-back, replenishment, and birthday flows are notably absent from their benchmark reports, a signal in itself, explored later in this article.
| Flow | Open rate | Click rate | Placed-order rate | Revenue / recipient |
|---|---|---|---|---|
| Abandoned Cart | 50.5% | 6.25% | 3.33% | $3.65 |
| Welcome Series | 51.3% | n/a | 1.97% | $2.65 |
| Browse Abandonment | – | – | 0.95% | $1.07 |
| Post-Purchase | – | – | 0.54% | $0.41 |
| Win-back / Replenishment / Birthday | not published | |||
Sources: Klaviyo Abandoned Cart Benchmark Report, Klaviyo Welcome Email Best Practices, Klaviyo 5 Steps to Improve Placed Order Rates, and Klaviyo UK Email Marketing Benchmarks 2026.
For context: the overall placed-order rate for automated Klaviyo emails averages ~2.11%, with Food & Beverage brands averaging 2.46%, Clothing/Accessories 2.15%, Electronics 1.95%, and Jewellery 1.85%.
Flow 1, Welcome series (reciprocity)
Published performance: 51.3% open rate, 1.97% placed-order rate, $2.65 revenue per recipient, per Klaviyo's welcome email research. Click rate is not published in Klaviyo's aggregate, though Klaviyo cites top performers reaching ~15%.
Klaviyo's recommended cadence: The Klaviyo Help Center's welcome series guide specifies a 3–5 email sequence: Email #1 sent immediately at signup, Email #2 at ~3 days, Email #3 at ~4 days.
Behavioural principle, reciprocity. When a brand offers a signup incentive, it triggers Cialdini's reciprocity principle: subscribers feel a subtle obligation to return the favour. The 51.3% open rate on welcome emails, versus ~35% on typical retail campaigns per Litmus's KPI benchmarks, reflects both timing and this reciprocity effect.
Flow 2, Abandoned cart (loss aversion)
Published performance: 50.5% open, 6.25% click, 3.33% placed-order rate, $3.65 revenue per recipient (Klaviyo Abandoned Cart Benchmark Report).
Klaviyo's recommended cadence: Trigger on "Checkout Started." Three emails: #1 at ~2–4 hours post-abandonment, #2 at ~24 hours, #3 at ~48 hours, per Klaviyo's flow timing guidance.
Context from Baymard: The Baymard Institute's cart abandonment research, synthesised from 50+ industry studies, puts the 2026 average cart abandonment rate at 70.2%. Baymard's checkout usability research breaks down the reasons: 43% of abandoners are "just browsing," but excluding that segment, the top causes are extra costs too high (39%), shipping too slow (21%), distrust of the site (19%), forced account creation (19%), and checkout complexity (18%).
Behavioural principle, loss aversion and the endowment effect. Once a customer has added an item to their cart, they have a psychological sense of ownership (endowment effect; Kahneman & Tversky's loss aversion research quantifies the effect at roughly 2× the intensity of equivalent gains).
Flow 3, Browse abandonment (endowment effect)
Published performance: 0.95% placed-order rate, $1.07 revenue per recipient, per Klaviyo's placed-order rate guide.
Klaviyo's recommended cadence: Trigger on "Viewed Product" without subsequent purchase. Send 1–2 emails within 24 hours. Feature dynamic product blocks of the browsed item plus related recommendations.
Critical filter: Exclude anyone who later completed a purchase of the browsed product, or anyone who has abandoned a cart containing it. Without this filter, browse-abandonment cannibalises the higher-RPR abandoned-cart flow.
Flow 4, Post-purchase (commitment and reciprocity)
Published performance: 0.54% placed-order rate, $0.41 revenue per recipient, per Klaviyo's placed-order rate analysis.
Klaviyo's recommended cadence: 2–3 emails triggered by "Placed Order." Email #1 immediately (order confirmation and thank-you). Email #2 at ~7–14 days (product usage tips, review request, cross-sell).
Behavioural principle, commitment and consistency. Cialdini's commitment-and-consistency principle predicts recent purchasers are disproportionately responsive to follow-up engagement that reinforces that decision.
Flow 5, Win-back (urgency and scarcity)
Published performance: Klaviyo does not publish aggregate benchmarks for win-back flows.
Klaviyo's recommended cadence: Trigger on a "no purchase in X days" condition, typically 75–90 days. Klaviyo's Help Center guidance suggests ~3 emails with escalating incentive.
Behavioural principle, urgency and scarcity. Limited-time offers and "coming off the list" messaging activate loss aversion from both sides.
Flow 6, Replenishment (sunk cost and endowment)
Published performance: Klaviyo does not publish aggregate benchmarks for replenishment flows. Klaviyo's Help Center guide explicitly notes timing must be derived from each brand's own data.
Klaviyo's recommended cadence: 2–3 emails timed to the customer's product-usage cycle.
Category cycles: Rivo's VIP repeat-rate statistics suggest skincare ~45 days, protein powder ~30 days. Finsi's 2026 retention benchmarks show pet and consumable verticals posting the highest repeat rates.
Flow 7, Birthday (positive affect)
Published performance: Klaviyo does not publish aggregate benchmarks for birthday flows.
Klaviyo's recommended cadence: Usually 1 email on the birthday itself.
Data prerequisite: Birthday flows require birthday data. Treat birthday flows as a Tier-2 investment.
Behavioural principle, positive affect and social recognition. Birthday messages invoke the social norm of celebration.
What other benchmarks say about flows vs campaigns
- Omnisend (2024–25): Omnisend's 2026 ecommerce statistics report automated emails averaging 42.1% open and 5.4% click, versus campaign emails at 26.6% open and 1.22% click. Abandoned-cart, welcome, and browse emails together account for 87% of all automated orders.
- Litmus (2025): Litmus's Retail and Ecommerce Email Marketing Playbook cites retail campaign benchmarks of ~38% open and ~1.3% click.
- Klaviyo's own analysis: Automated emails average 48–55% open and 4–5% click per the 2026 Email Marketing Benchmarks.
The consensus: automated flow emails outperform bulk campaigns by 2–3× on engagement and by far more on revenue per recipient.
Frequency and unsubscribe health
- Unsubscribe rate: Klaviyo's deliverability guide recommends keeping unsubscribes below 0.3% per campaign. Litmus's KPI benchmarks recommend staying under 1–2%.
- Over-sending: Mailgun's unsubscribe research found that 20% of unsubscribes occur specifically because a brand emails too often.
For most DTC operators, a 1–2 campaign per week cadence with flows running independently is the sweet spot.
The order-of-operations: what to build first
Klaviyo's own flow-priority guidance ranks flows by impact for new ecommerce brands:
- Welcome series
- Abandoned cart
- Post-purchase
- Win-back
Browse abandonment, replenishment, and birthday flows are categorised as not top priority at launch.
The playbook, compressed
| Flow | Klaviyo benchmark | Email count | First send timing | Priority |
|---|---|---|---|---|
| Welcome | 51.3% open, 1.97% PO, $2.65 RPR | 3–5 | Immediate | 1 |
| Abandoned Cart | 50.5% open, 6.25% click, 3.33% PO, $3.65 RPR | 3 | 2–4 hours | 2 |
| Post-Purchase | 0.54% PO, $0.41 RPR | 2–3 | Immediate | 3 |
| Win-back | not published | ~3 | 75–90 days post-purchase | 4 |
| Browse Abandonment | 0.95% PO, $1.07 RPR | 1–2 | Within 24 hours | 5 |
| Replenishment | not published | 2–3 | 5 days pre-depletion | 6 |
| Birthday | not published | 1 | On birthday | 7 |
The top four flows are where email-automation revenue lives. The rest of the program is execution.
Sources
Klaviyo:
- Abandoned Cart Benchmark Report
- Welcome Email Examples & Best Practices
- 5 Steps to Improve Placed Order Rates
- Email Marketing Benchmarks 2026
- Email Deliverability
- Welcome Series Guide
- Flow Timing Guide
- Replenishment Flow Guide
- Getting Started with Flows
Baymard Institute:
Other: