Is Klaviyo Down? How to Check Klaviyo Status Right Now

Klaviyo is the revenue engine for most Shopify-native ecommerce brands — flows trigger abandoned cart recoveries, campaigns drive flash sale conversions, and SMS sequences move units within minutes of sending. When Klaviyo is working, your automations run silently in the background and revenue arrives. When Klaviyo goes down, abandoned carts don't recover, time-sensitive campaigns miss their window, and your revenue dashboard flatlines. The impact shows up in dollars, not error logs.

Here's how to determine whether Klaviyo is down, identify which component is failing, and protect your revenue when it degrades.

Is Klaviyo Down Right Now?

Check these sources in order:

1. Statusfield — Klaviyo status — real-time monitoring across Klaviyo's email delivery, API, flows, SMS, and analytics services.
2. Twitter/X — search Klaviyo down or Klaviyo flows not sending sorted by Latest. Ecommerce operators notice flow failures quickly, especially during high-traffic periods like flash sales.
3. Downdetector — useful for confirming user-reported spikes, though it lacks component-level detail for email vs. SMS vs. API failures.

What Actually Breaks During a Klaviyo Outage

Klaviyo is composed of several independent subsystems, and degradation is often confined to one.

Component	What it does	Impact when down
Email delivery	Sends transactional and marketing emails to subscribers	Flows and campaigns queue but emails don't reach inboxes; revenue drops
SMS delivery	Sends text messages via your connected SMS number	SMS flows stall; time-sensitive alerts and promotions don't reach customers
Flows	Trigger-based automation sequences (abandoned cart, welcome, post-purchase)	Automations don't fire on schedule; revenue tied to flows stops
Campaigns	Scheduled and manual email/SMS blasts	Campaigns fail to send or send with significant delays
API	REST API for profile sync, event tracking, and list management	Integrations stop syncing; custom events (e.g., purchase events) don't trigger flows
Webhooks	Delivers events from Klaviyo to your server (flow action completions, etc.)	Your server stops receiving Klaviyo event notifications
Segments	Dynamic audience segmentation based on behavior and properties	Segment refresh stalls; flows using behavioral segments fire against stale audiences
Analytics	Revenue attribution, open/click tracking, flow analytics	Dashboard shows incomplete or delayed data; attribution numbers are wrong
Integrations	Shopify, WooCommerce, BigCommerce sync	Product data, order data, and customer profiles don't update; flows using recent purchase data degrade

Common Klaviyo Error Symptoms

What you see	What it usually means
Flows show "queued" or "pending" indefinitely	Email or SMS delivery is degraded; messages are accepted but not sent
Campaigns sent but open rates are anomalously low	Delivery is degraded; emails are stuck in Klaviyo's outbound queue
API returns 429 Too Many Requests	You've hit Klaviyo's rate limits — not an outage, reduce request frequency
API returns 503 Service Unavailable	Klaviyo's API layer is degraded
Shopify events not triggering flows	Integration sync is degraded; Shopify events aren't reaching Klaviyo
Segments showing wrong subscriber counts	Segment refresh pipeline is delayed or stalled
SMS messages showing "delivered" in Klaviyo but users report not receiving	Carrier-level delivery issue downstream of Klaviyo's dispatch
Analytics showing zero revenue for current day	Analytics pipeline is delayed — usually catches up; check again in 2–4 hours

Key distinction: Klaviyo analytics data is often delayed by 2–4 hours under normal conditions. A revenue dashboard showing $0 for the last hour is not necessarily an outage — check whether flows are actively sending before concluding Klaviyo is down.

How Klaviyo's Architecture Affects Outage Scope

Email and SMS delivery are separate pipelines. A degradation in Klaviyo's email delivery system does not automatically affect SMS, and vice versa. If only one channel is failing, scope your investigation to that specific pipeline rather than treating it as a full Klaviyo outage.

Flows and campaigns share delivery infrastructure but have independent trigger systems. A flow trigger failure (e.g., the Shopify integration not emitting abandoned cart events) can look like a delivery failure but is actually an event ingestion problem. Check whether the flow's trigger events are arriving in Klaviyo before assuming delivery is broken.

API rate limits are per-endpoint. Klaviyo enforces rate limits independently across different API endpoints. Hitting the limit on profile updates doesn't affect the event tracking endpoint. If you're seeing 429 errors, identify which specific endpoint is rate-limited rather than assuming Klaviyo's API is down globally.

Segment refresh is asynchronous and can lag under load. Klaviyo's segment computation runs in the background and is not real-time. During periods of high platform load or an active incident, segment refresh can lag by hours. Flows that depend on recently refreshed segments will fire against stale audiences until the segment catches up.

Shopify and other integration syncs are near-real-time but not instant. Klaviyo polls Shopify for events on a short interval. If your Shopify store has a traffic spike, the sync queue can lag. This is not an outage — it's normal behavior under high load — but it can delay flow triggers by minutes to tens of minutes.

Is It Klaviyo or Your Configuration?

Before concluding it's a Klaviyo outage, rule out these configuration issues:

Your API key is wrong or has insufficient permissions. Klaviyo API keys are scoped to specific resources (profiles, events, lists, etc.). A key with read-only access will fail when you try to write. Check whether the API key you're using has the right permissions for the operations you're running.

Your Shopify integration is disconnected. Klaviyo's Shopify integration can disconnect after Shopify OAuth re-authorization or a shop ownership transfer. If flows tied to Shopify events have stopped firing, check the integration health in your Klaviyo account under Integrations → Shopify.

Your flow has a filter or condition blocking sends. Flows with strict smart sending rules (e.g., "don't send if subscriber received an email in the last 24 hours") can appear to stall when they're actually suppressing correctly. Check the flow's "Skipped" count in analytics to see how many sends are being filtered.

Your sending domain has DMARC/DKIM issues. If you recently updated DNS records or migrated domain registrars, your Klaviyo sending domain records (DKIM, DMARC, Return-Path) may have been removed or broken. Emails sent through a domain with broken authentication will land in spam or be rejected — and Klaviyo's delivery logs may show "delivered" while inboxes see nothing.

When these are ruled out and failures persist across multiple accounts or channels, check Statusfield to confirm it's a Klaviyo platform issue.

Hardening Your Revenue Engine Against Klaviyo Outages

Klaviyo sits in the critical path of ecommerce revenue. These steps reduce impact when it degrades.

1. Monitor flow health daily, not just campaign sends

Flows run silently in the background and their failures are invisible until you check. Set up a daily review of abandoned cart flow send volume — a sudden drop in sends is the earliest signal of a delivery or trigger problem.

2. Set up back-in-stock and restock flows with redundant triggers

For high-revenue flows tied to inventory events, configure both Klaviyo's native integration trigger and a fallback API call from your backend. If the integration sync lags, the direct API event ensures the flow fires.

3. Stagger high-volume campaign sends

Sending to your entire list simultaneously increases your exposure to delivery delays during a degradation. Stagger large campaigns across 30–60 minute windows. A partial delivery during a partial outage is better than a full campaign queue sitting idle.

4. Keep a plain-text transactional fallback outside Klaviyo

For your most critical transactional emails (order confirmation, shipping notification), maintain a fallback via your transactional email provider (Postmark, SendGrid, Mailgun). Route these through Klaviyo when it's healthy; switch to the fallback when it's not. Order confirmation is not optional — customers will escalate immediately if it doesn't arrive.

5. Monitor Klaviyo like a revenue-critical dependency

Klaviyo outages translate directly to missed revenue. Statusfield monitors Klaviyo's email delivery, API, and SMS systems continuously, alerting you the moment status changes — through Slack, Discord, email, or webhook.

How to Stay Ahead of Klaviyo Outages

The goal is to know Klaviyo is degraded before your abandoned cart flow stops recovering revenue.

Statusfield monitors Klaviyo continuously and delivers alerts the moment a degradation is detected. On the free plan you get 3 monitors and 10 alerts/month, no credit card required.

→ Monitor Klaviyo on Statusfield — free, no credit card required

FAQ

Why are my Klaviyo flows not sending?

There are three common causes: (1) Klaviyo's delivery pipeline is degraded — check Statusfield; (2) the trigger event isn't reaching Klaviyo — check your integration (Shopify, API) is sending events correctly; (3) a flow filter or smart sending rule is suppressing sends — check the flow's "Skipped" analytics tab. If Statusfield shows Klaviyo operational and your integration is healthy, the issue is usually a flow configuration filter.

Is Klaviyo down or is it just slow?

Check Statusfield. Klaviyo's analytics dashboard is often delayed by 2–4 hours under normal conditions, so a lag in revenue reporting is not necessarily an outage. If flows show "queued" sends that aren't clearing or campaign delivery times are significantly longer than usual, that signals a delivery degradation rather than a reporting lag.

Klaviyo says emails are sent but customers aren't receiving them. Why?

"Sent" in Klaviyo means Klaviyo dispatched the email to the receiving mail server — it does not mean the email landed in the inbox. Delivery failures after dispatch are caused by recipient spam filters, domain reputation issues (check your DKIM/DMARC), or the receiving server deferring the message. Check Klaviyo's message delivery logs for bounce or spam classification details. If DKIM/DMARC records are intact and bounces are normal, confirm at Statusfield whether there's a broader delivery issue.

My Klaviyo API calls are failing. Is Klaviyo down?

Check the HTTP status code first. 429 means you've hit a rate limit — slow down your request rate. 401 means an API key problem — check permissions. 503 or 500 responses indicate a platform issue — confirm at Statusfield. Note that Klaviyo's rate limits are per-endpoint, so hitting the limit on profile updates doesn't mean all API endpoints are affected.

How long do Klaviyo outages typically last?

Email delivery degradations typically resolve within 30–90 minutes. When they do, queued messages usually deliver in the order they were submitted, though with delay. Full platform outages are rare. SMS outages may involve carrier-side issues that extend beyond Klaviyo's control. Monitor Statusfield for live updates and resolution times during an incident.