How to Set Up Klaviyo Email Flows for Shopify: The Essential Guide

Email generates an average of $36 for every $1 spent — making it the highest-ROI channel in e-commerce. But most Shopify stores either have no email automation or have the bare minimum. Here are the six Klaviyo flows that should be running on every Shopify store, and how to set them up correctly.

Flow 1: Welcome Series (The Most Important Flow)

This is the flow that introduces new subscribers to your brand. It triggers when someone signs up for your email list — through a popup, footer form, or checkout opt-in.

The Structure

• Email 1 (Immediately): Deliver the promised incentive (discount code, free guide, etc.). Keep it short. Subject: "Here's your [X]% off"
• Email 2 (Day 2): Tell your brand story. Why you exist, what you believe, what makes your product different. No hard sell.
• Email 3 (Day 4): Social proof. Customer reviews, UGC photos, press mentions. Show them other people love your product.
• Email 4 (Day 6): Best sellers. Curate your top 3-4 products with compelling descriptions and "Shop Now" buttons.
• Email 5 (Day 8): Urgency. If you offered a discount in Email 1, remind them it expires. "Your [X]% off expires tomorrow."

A well-built welcome series should convert 5-10% of new subscribers into first-time buyers. If yours is below 3%, the content or timing needs work. This is especially important for stores investing in paid advertising — you're paying to drive traffic, so every subscriber that doesn't convert is wasted ad spend.

Flow 2: Abandoned Cart Recovery

This triggers when someone adds a product to their cart but doesn't complete checkout. It's the highest-revenue automated flow for most stores.

The Structure

• Email 1 (1 hour): Simple reminder. "You left something in your cart." Show the product image, name, and a "Complete Order" button. No discount yet.
• Email 2 (24 hours): Add social proof. "Here's what customers are saying about [product]" plus the cart reminder.
• Email 3 (48 hours): Offer an incentive if needed. "Still thinking? Here's 10% off to help you decide." Only offer a discount if your margins support it.

Important: split test the timing between Email 1 and Email 2. Some stores see better results with a 4-hour first email; others perform better at 1 hour. Test it.

Flow 3: Post-Purchase

What happens after someone buys is just as important as what happens before. This flow builds loyalty and drives repeat purchases.

• Email 1 (Immediately): Order confirmation with a personal thank you. Set expectations for shipping.
• Email 2 (3 days after delivery): "How's your [product]?" Ask for feedback. Link to leave a review.
• Email 3 (14 days after delivery): Cross-sell related products. "Customers who bought [X] also love [Y]."
• Email 4 (30 days): Replenishment reminder (if applicable) or a new product recommendation.

Flow 4: Browse Abandonment

This triggers when someone views a product page but doesn't add to cart. It's less aggressive than cart abandonment — the intent is lower, so the approach should be softer.

• Email 1 (2 hours): "Still browsing?" Show the product they viewed with a brief description and CTA.
• Email 2 (24 hours): Show similar products. "You might also like..." with 3-4 alternatives.

Keep this flow to 2 emails maximum. More than that feels intrusive for someone who only looked at a product page.

Flow 5: Win-Back

Targets customers who haven't purchased in a defined period (typically 60-90 days for most e-commerce brands).

• Email 1 (60 days): "We miss you." Highlight new products or bestsellers they haven't seen.
• Email 2 (75 days): Offer an exclusive return incentive. "Here's 15% off your next order — just for coming back."
• Email 3 (90 days): Final attempt. "Last chance" messaging. If they don't engage, move them to a sunset segment to protect your deliverability.

Flow 6: VIP / Loyalty

Segment your top 10% of customers by lifetime value and create exclusive content and offers for them.

• Early access to new product launches
• Exclusive discount codes not available to the general list
• Behind-the-scenes content and founder updates
• Birthday/anniversary offers

Your VIP customers are your most profitable segment. They cost nothing to acquire (they already bought) and they convert at 3-5x the rate of your general list. Treat them accordingly.

Key Klaviyo Settings Most Stores Miss

• Smart Sending: Enable this to prevent overwhelming subscribers with multiple flow emails in a short period.
• Quiet Hours: Don't send emails between 10pm and 7am in the recipient's timezone.
• Flow Filters: Exclude recent purchasers from abandoned cart flows. Exclude people who already opened Email 1 from getting Email 2 of the welcome series.
• Segmentation: Beyond flows, segment your campaigns by engagement level. Send to engaged subscribers (opened in last 90 days) for better deliverability.

Email marketing isn't a set-it-and-forget-it channel. Review your flow performance monthly, A/B test subject lines and send times, and update creative quarterly. The stores that treat email as a living system — not a static automation — are the ones that consistently see 25-40% of total revenue come from email. Pair strong email flows with on-site conversion optimization and you have a compounding revenue engine.

If you need help building these flows for your Shopify store, our consulting team can audit your current setup and build a custom email strategy. Or if you want us to manage the entire email and SMS program, check out our Performance Marketing packages.

Advanced Klaviyo Strategies Most Stores Miss

Sunset Flows: Protecting Your Deliverability

One of the most overlooked flows in Klaviyo is the sunset flow. If subscribers haven't opened or clicked an email in 90-120 days, they're dragging down your deliverability score. Gmail and Yahoo use engagement metrics to decide whether your emails land in the inbox or spam folder.

Build a sunset flow that sends two re-engagement emails ("We miss you" with a compelling offer), and if there's still no engagement, automatically suppresses the contact. A smaller, engaged list will always outperform a large, unengaged one. We've seen stores improve open rates by 15-20% simply by implementing proper list hygiene through sunset flows.

Segmentation Beyond Basic Demographics

Most Shopify stores segment by purchase history and location. That's table stakes. The advanced segments that drive real revenue include: customers who've purchased 2+ times in the last 60 days (your most valuable — send them VIP offers), customers who purchased once but haven't returned in 45 days (they liked you enough to buy — what's stopping the second purchase?), and high-AOV customers vs low-AOV customers (these groups respond to completely different messaging). Our performance marketing team builds these segments as part of every Klaviyo implementation.

A/B Testing That Actually Matters

Stop A/B testing subject lines with minor word changes. The tests that move the needle are: plain text vs designed emails (plain text often wins for abandoned cart), short vs long emails (test 3-sentence vs 8-paragraph for your audience), single CTA vs multiple CTAs, and send time (morning vs evening, weekday vs weekend). Run each test for at least 1,000 sends before drawing conclusions. Anything less is statistical noise.

SMS Integration with Klaviyo

Klaviyo's SMS capabilities are often underused. The highest-performing SMS flows are: abandoned cart reminders (sent 1 hour after the email, not simultaneously), flash sale announcements (SMS has 98% open rates vs email's 20%), and back-in-stock notifications. Keep SMS messages under 160 characters. No links in the first message — earn the click with a follow-up. Budget $0.01-0.02 per SMS send and expect 10-25x ROI on well-targeted flows. For a deeper dive into SMS strategy, see our SMS list building guide.