Monitor Klaviyo abandoned cart flows that stop firing
Klaviyo abandoned cart flows trigger on a Started Checkout metric. When that metric changes, or when a flow filter references a property that no longer exists, the flow stops entering profiles. Klaviyo logs zero entries as normal behaviour. The customer's inbox is empty.
Telltide confirms the flow fires from the inbox, in the right window, every time.
What breaks quietly
Why abandoned cart flows fail without alerting
Klaviyo flow analytics show entry counts and conversion rates. They do not alert when a single profile never enters because a metric property changed upstream, or when a delay calculation resolves to zero because a custom field is null.
Metric trigger references renamed property
A flow triggers on Started Checkout where cart value is above 50. An engineer renames the cart value field in the metric payload. The flow filter still references the old name. Zero profiles enter. Klaviyo logs zero entries. No alert fires.
Suppression list grows broader than intended
A suppression rule is added to exclude profiles who purchased in the last seven days. The rule accidentally matches profiles who added to cart but have not checked out. Half the audience is suppressed before the first email. Klaviyo logs the suppressions. No broken state is flagged.
Flow filter excludes carts after currency field change
A flow filter checks cart value in USD. The site switches to multi-currency. Started Checkout now sends cart value in the customer's local currency with no currency code. The filter fails for all non-USD carts. Klaviyo logs the filter as not met.
Delay timing conflicts with global send window
A flow waits four hours after checkout. A global quiet-hours rule restricts sends to 9am to 9pm. A customer who adds to cart at 7pm enters the flow. Four hours later it is 11pm. The send is held until 9am the next day. By then, the customer has completed the purchase.
Conditional split routes backward after property rename
A flow splits profiles on cart category. An attribute rename updates the property reference. The boolean logic is accidentally inverted. High-value carts receive the low-value variant. Both paths report full sends.
Template references missing product field
The email pulls a product image URL from a custom property. The property is deprecated after a catalog rebuild. The template renders with a broken image. Klaviyo logs the send as delivered. The email arrives with blank content.
Real breakage pattern
When a newsletter fails silently in the first hour
An operator scheduled a Saturday-morning broadcast to 80,000 subscribers. The platform logged full delivery. The first hour of the send window passed with no inbox arrivals. The symptom was not an error event. It was the absence of the expected send.
Late arrival in the first 30 minutes is usually a scheduling issue
When an email arrives in the first half-hour of a window but later than expected, the cause is often a timezone miscalculation or a send-time optimisation shift. A genuine breakage shows up as no arrival at all, or arrival outside the configured window entirely.
Scheduled monitoring catches the symptom before the support ticket
The absence of the expected send is harder to spot than a delivery error. A scheduled check fires a test event on a cadence. If the flow does not send within the arrival window, an alert fires. The operator knows the flow is idle before customers notice.
Zero entries are not flagged as broken
When a metric trigger stops matching and flow entry drops to zero, Klaviyo treats that as valid state. There is no threshold for alerting on abnormally low entry counts. Inbox-side monitoring fills the gap by confirming a test profile enters and receives the first step.
How Telltide fits
A monitored profile for every cart-recovery path
Telltide runs alongside Klaviyo, not inside it. You add a test profile to the flow entry audience. Telltide watches the inbox for the sends Klaviyo says it made.
Add the monitor address to your flow trigger
Telltide gives you a unique inbox address per monitor. You create a profile with that address in Klaviyo, fire a Started Checkout event with the properties your flow expects, and let it enter at the first step. For recurring checks, you fire the event from a scheduled script or webhook.
Set the arrival window per step
For a flow with no delay, the window might be five minutes. For a four-hour cart-abandon delay, the window is four hours plus a buffer. For Smart Sending, you set a wider window to account for send-time variation.
Get alerted when the inbox disagrees with Klaviyo
If the email does not arrive in the window, an alert fires. If it arrives twice, an alert fires. If the content deviates from the reference template, an alert fires. Klaviyo might still report the flow as healthy. The alert tells you what actually reached the inbox.
Monitoring specific flow components
Metric triggers, delays and conditional splits
Each flow component has its own monitoring considerations. Here is how to set up Telltide for the components that break most often in cart-recovery flows.
Fire the Started Checkout metric from a test harness
For a flow that enters on Started Checkout, trigger the metric from a scheduled API call or script. Include all properties your flow filters depend on (cart value, category, currency). The monitored profile receives the event, enters the flow, and Telltide confirms the first step fires. If the metric schema changes and entry stops, the monitor alerts within one check cycle.
Match the arrival window to the delay duration
A flow with a four-hour delay needs a four-hour arrival window plus a 30-minute buffer. If the email arrives early, the delay was skipped. If it arrives late, something downstream held it up. Either case fires an alert.
Monitor each cart-value variant separately
If a flow splits profiles on cart value (above or below 100), create a separate monitor for each path. Each monitor gets a unique profile with a Started Checkout event that includes the cart value your flow filter expects. If one variant stops sending, you know immediately which conditional split broke.
Watch the step after a profile-property update
If a flow includes a profile-update action followed by a trigger that depends on the updated value, monitor the email step that follows the trigger. If the update writes the wrong value, the trigger will not fire, and the monitor will catch the missing email.
Flow observability vs native analytics
What Klaviyo shows, and what it cannot
Klaviyo flow analytics are detailed. They show every entry, every send, every conversion. What they cannot show is whether the email that Klaviyo logged as delivered actually arrived in the shape you intended.
Klaviyo reports delivery, not inbox arrival
When Klaviyo logs a send as delivered, it means the receiving mail server accepted the message. It does not confirm inbox placement, spam filtering, or correct rendering. Inbox-side monitoring closes that gap.
Suppression events are logged, not alerted
When a profile is suppressed before a flow fires, Klaviyo logs the suppression reason. It does not alert you that the suppression happened. If the suppression was caused by a misconfigured rule, you will not know until you actively review the suppression logs.
Template errors render silently
When a template references a missing property, Klaviyo renders the block as blank. The email is logged as delivered. The customer receives broken content. Telltide compares the arrived email against a reference and alerts on structural deviation.
Pair it with
Concepts and related monitoring guides
The pages below cover the broader Klaviyo monitoring context and how it fits with other journey types.
- Monitor Klaviyo: the parent guide covering all Klaviyo send surfaces.
- Abandoned cart monitoring: step-by-step confirmation for cart-recovery flows.
- Silent send failure: what constitutes a silent failure and why it matters.
- Klaviyo abandoned cart flow not triggering: common causes and fixes.
FAQ
Common questions about monitoring abandoned cart flows
Why did my Klaviyo abandoned cart flow stop sending?
Common causes include metric triggers that reference renamed properties, suppression lists that grew broader than intended, flow filters that exclude cart values below a threshold after a currency field change, or delay timings that conflict with global send windows. Klaviyo logs each component as executed or not met. The inbox confirms whether the email actually fired.
How do I monitor a Klaviyo flow with multiple cart-value variants?
Create a separate monitor for each variant. Each gets a unique profile with a Started Checkout event that includes the cart value your flow filter expects. If one variant stops sending, you know immediately which conditional split broke.
Can I detect when a Klaviyo flow trigger references a missing metric property?
Yes. A scheduled test fires the Started Checkout metric with the properties your flow expects. If the metric schema changes and the flow stops entering profiles, the monitor catches the missing email within one check cycle.
What happens when suppression timing changes and the flow window closes too soon?
If a profile is suppressed before the flow fires, Klaviyo logs the suppression but does not alert. A monitored profile with no suppression rules applied confirms the flow would have sent. If the email does not arrive, the alert tells you the window closed early.