You’re paying Klaviyo $500, $1,000, maybe $3,000 a month depending on your list size. You have a welcome series, an abandoned cart flow, and you send a campaign every week or two. Your Klaviyo-attributed revenue looks okay, maybe 20 to 25% of total revenue.
Here’s the uncomfortable question: what would that number be if your Klaviyo account was actually optimized?
For the brands we audit, the answer is typically 30 to 40% of total revenue from email and SMS, sometimes higher. The gap between where most brands are and where they could be represents tens of thousands of dollars in monthly revenue sitting in an underutilized Klaviyo account.
This is what a proper Klaviyo audit looks like, and where the money is hiding.
The Flow Audit
Flows (automated sequences triggered by customer behavior) are where the highest-leverage revenue lives. Most brands have three or four flows. Optimized brands run twelve or more. (Here is the full list of the 12 Klaviyo flows every Shopify brand should be running.)
What to check:
Welcome series. Is it running? How many emails? Is it segmented by acquisition source (paid vs. organic vs. referral)? Does it include SMS opt-in? Is the content product education or just discounts? Most welcome series we audit are two emails: a discount code and a “shop now” follow-up. That’s leaving money on the table.
Abandoned cart / checkout. Is it triggering at the right time? (First email at 1 hour, not 24 hours.) Is it a single email or a multi-touch sequence? Does it include SMS? Is the messaging different for first-time buyers versus returning customers? Is there a dynamic product block showing the abandoned items?
Browse abandonment. Does this flow exist at all? Most brands don’t have one. A customer who browsed a product page but didn’t add to cart is a warm lead. A timely, relevant email can recover a meaningful percentage of those sessions.
Post-purchase. This is the most neglected flow and the highest-opportunity one. What happens after someone buys? Is there a product education sequence? A cross-sell timed to when they’ve received the product? A review request? A replenishment reminder for consumable products? Most brands send a thank-you email and nothing else for 30 days.
Win-back. Is it running? What’s the trigger: 60 days since last purchase? 90? 120? Is it segmented by customer value? Is the messaging personalized or a generic “we miss you” blast?
Sunset / list hygiene. Are you actively suppressing unengaged subscribers? Sending to people who haven’t opened in six months destroys deliverability, which hurts the performance of every email you send to everyone else.
The Segmentation Audit
Most Klaviyo accounts use two segments: “all subscribers” and “engaged subscribers.” That’s not segmentation. That’s a toggle.
What to check:
Are you segmenting by RFM (recency, frequency, monetary value)? A customer who bought last week and a customer who bought six months ago should not receive the same campaign. Are you segmenting by product category? A customer who buys skincare doesn’t necessarily want your haircare launch email. Are you using predicted customer lifetime value (Klaviyo’s predictive analytics) to identify and prioritize your highest-value segments?
The shift from “blast everyone” to “send the right message to the right segment” typically improves campaign revenue by 20 to 40% while actually sending fewer emails.
The Deliverability Audit
If your open rates have been declining, your deliverability may be compromised, and no amount of flow optimization will fix it if your emails are landing in spam.
What to check:
- Authentication (SPF, DKIM, DMARC) configured correctly
- A dedicated sending domain set up
- Bounce rate below 0.5%
- Spam complaint rate below 0.1%
- Regular list cleaning to remove hard bounces and long-term unengaged contacts
- Engagement trends over the last 90 days: are open rates stable, rising or declining?
The Revenue Attribution Check
Klaviyo’s default attribution windows are generous: 5 days for opens and 1 day for clicks on flows, and 5 days for opens and 5 days for clicks on campaigns. This means Klaviyo may be taking credit for revenue it didn’t actually drive.
What to check: Compare Klaviyo-reported revenue to your Shopify analytics. Look at the click-only attribution (which is more conservative and more accurate). If there’s a significant gap between open-attributed and click-attributed revenue, your real email performance is closer to the click number.
This isn’t about discounting Klaviyo’s value. It’s about having an accurate picture so you know where to invest optimization effort.
The Quick Wins
After auditing dozens of Klaviyo accounts, these are the patterns that unlock the most revenue the fastest:
- Build a post-purchase flow with at least five emails, timed to the customer’s actual product experience.
- Add browse abandonment if it doesn’t exist.
- Segment campaigns by engagement level, and send your best content to your best subscribers first.
- Clean your list aggressively. Better to have 50,000 engaged subscribers than 100,000 where half are dragging down your deliverability.
- Add SMS to your top three flows (welcome, abandoned cart, post-purchase) if you haven’t already.
Want us to audit your Klaviyo account? We’ll show you exactly where the revenue is hiding. Start a project inquiry or learn more about our lifecycle marketing work.
