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The Klaviyo Audit Checklist You Must Use Before Starting Any Brand’s Email Marketing
01 Jun 2026
Most email marketing agencies skip the audit and jump straight into building flows for a new client account. That single mistake costs brands thousands in lost revenue and weeks of fixing problems that should never have existed. A Klaviyo account that looks clean on the surface can be hiding broken flows, unengaged lists, and poor deliverability underneath. Before you send a single email, an experienced email marketing partner knows the importance of understanding exactly what is happening inside the account first.
This audit checklist gives you a complete picture of the account so you can build email strategies on solid ground from day one.
Why a Klaviyo Audit Matters More Than You Think
Skipping an audit is like renovating a house without checking the foundations first. Every decision you make inside Klaviyo flows, campaigns, and segments, depends on the health of the existing account structure. A thorough audit protects your reputation as a strategist and protects your client's sender reputation at the same time. Brands that start with an audit see faster results because there are no hidden problems slowing progress down from the start. The audit also gives you a clear baseline so you can prove the value of every improvement you make going forward.
List Health and Subscriber Quality
Your client's email list is the foundation that every other part of their email marketing is built on. A large list with low engagement will damage deliverability faster than a small list with active subscribers ever will. This is the first thing you check because everything else depends on what you find here.
Key Engagement Signals
- Active Rate: Find out what percentage of the list has opened or clicked in the last 90 days. Anything below 20% active means the list has serious engagement problems that need addressing now.
- Suppressed Contacts: Review how many contacts are suppressed due to bounces, unsubscribes, or manual removal by the account owner. A high suppression rate tells you there has been poor list hygiene or aggressive sending in the past.
- Duplicate Profiles: Klaviyo sometimes creates duplicate profiles when integrations are not properly configured from the start. Duplicate profiles distort your reporting and inflate list size in ways that mislead your strategy going forward.
- Invalid Emails: Check for obviously malformed or fake email addresses that should have been caught at the point of signup. These addresses hurt your sender score and serve absolutely no purpose in your client's account.
Account Settings and Sending Infrastructure
Getting your sending infrastructure right is one of the most unglamorous parts of email marketing and one of the most important. Poor settings here will cause every email you send to underperform, no matter how good the content actually is.
Domain Authentication
Every serious Klaviyo account needs SPF, DKIM, and DMARC records properly configured before sending a single campaign. These authentication settings help inbox providers verify that emails are legitimate and safe to deliver. These records tell inbox providers that your emails are legitimate and not sent by someone trying to impersonate your client's brand. You can verify these records inside Klaviyo's account settings under the sending domains section without needing developer access. Many agencies inherit accounts where these records were never set up correctly, and deliverability has suffered quietly as a result. Fix this before anything else, and you will often see open rates improve within just one or two sending cycles.
Sending Reputation Metrics
- Send History: Review the volume of emails sent per week over the last six months to spot any sudden spikes or gaps. Sudden spikes in send volume are a common cause of deliverability problems and inbox placement issues.
- Bounce Rate: A hard bounce rate above 2% is a red flag that needs immediate attention before you send any new campaigns. High bounce rates signal to inbox providers that the sender is not maintaining basic list hygiene standards.
- Spam Rate: Check Google Postmaster Tools and any available spam complaint data connected to the client's sending domain. Even a spam rate of 0.3% can trigger inbox placement issues with Gmail and other major providers.
Flow Audit – Are the Right Automations Actually Running?
Flows are where the majority of email automation revenue is generated for ecommerce brands using Klaviyo. An account without properly functioning flows is leaving recurring revenue on the table every single day without knowing it. Many ecommerce brands choose to hire Klaviyo expert to identify broken automations and deliverability risks, which requires both technical and strategic experience.
Core Automation Flow Checks
Run through this checklist for every flow you find inside the account before building or editing anything new.
- Live Status: Confirm that every revenue-generating flow is set to live and not stuck in draft or manual mode. Flows left in draft mode after testing is one of the most common and costly oversights found in audits.
- Trigger Logic: Review every flow trigger to confirm it fires correctly based on the intended customer action or event. A misconfigured trigger means the right email goes to the wrong person at the wrong moment in their journey.
- Time Delays: Check whether the time delays between emails in each flow match the buying behaviour of your client's specific customer base. A fashion brand and a supplement brand need completely different delay structures to match how their customers actually shop.
- Smart Sending: Verify that smart sending is configured correctly so customers are not receiving too many emails from overlapping flows at once. Over-messaging is one of the fastest ways to increase unsubscribes and damage the long-term health of a list.
Segmentation Review
Good segmentation makes email campaigns feel relevant instead of generic. Review whether the account uses segments based on purchase behaviour, engagement level, and customer lifecycle stage. Klaviyo’s segmentation tools allow brands to target subscribers more accurately, improving engagement and reducing unnecessary sends.
1- Ecommerce Behaviour Segmentation
Review whether the account separates customers based on browsing behaviour, purchase frequency, average order value, and product category interest. Ecommerce segmentation becomes significantly more effective when campaigns are tailored around actual shopping behaviour instead of broad list-wide messaging.
2- Engagement-Based Segments
Review whether subscribers are grouped based on opens, clicks, and recent activity. Separating engaged and unengaged audiences helps protect deliverability and improves campaign performance.
3- VIP Customer Segments
Check if high-value customers are segmented based on purchase frequency, average order value, or total spend. VIP segments allow brands to send more personalised offers and retention-focused campaigns.
4- Lifecycle Stage Segmentation
Audit whether customers are segmented by their stage in the buying journey, such as new subscribers, first-time buyers, repeat customers, or inactive users. Lifecycle segmentation helps deliver more relevant messaging at every stage.
Campaign History and Sending Patterns
Reviewing past campaigns tells you more about an account's health than almost anything else in the audit process. Look at the last 12 months of campaign sends and note the open rates, click rates, and revenue generated from each one.
Consistent open rates above 25% are a sign that the list is healthy and the content is connecting with subscribers well. Open rates below 15% across multiple campaigns indicate either a deliverability problem or a serious disconnect between content and audience expectations. Look for any campaigns that received unusually high unsubscribe rates because those often point to a specific content or frequency mistake made at that time. Bring these patterns to your client early so they understand exactly what the data is showing about their email program's past performance.
Signup Forms and List Growth Sources
An audit is not complete until you understand exactly how new subscribers are entering the client's Klaviyo account every day. Bad signup sources produce low-quality subscribers who hurt your engagement rates and your deliverability from the very start.
- Form Placement: Review where signup forms appear on the website and whether they are positioned where high-intent visitors actually spend time. A pop-up that fires immediately on the homepage collects very different subscribers than one that appears on a product page after 30 seconds.
- Incentive Quality: Check what incentive the brand offers in exchange for an email address on their signup forms. A discount that is too aggressive attracts coupon hunters who buy once and never engage with the brand again after that.
- Double Opt-In: Determine whether double opt-in is enabled, as this directly affects the quality and deliverability health of every new subscriber. For some brands, it reduces list growth speed, but it consistently produces a more engaged and cleaner subscriber base overall.
Conclusion
The Klaviyo audit checklist is not an optional process you complete when time allows. It is the single most important step you take before touching any brand’s email marketing account. Brands that audit first and build second consistently see better deliverability, stronger engagement, and faster revenue results in less time. Every hour spent on this audit saves you multiple hours of troubleshooting and explaining poor results to clients down the road. Do the work upfront, document what you find, and let the audit guide every decision you make from that point forward.
