Companies / martech

Klaviyo

klaviyo.comStatus page: status.klaviyo.comNow: operational since 2026-10-17
366incidents since 2016-08-26
61major or critical
12in the last 90 days
0silently edited or deleted

Recent notable changes

When (UTC)ChangeKind
Major incident: Flow Sending Delays
Klaviyo reported a major degradation in flow message sending starting 2026-10-17 17:01 UTC, with some customers’ flow emails delayed; immediate sends remained unaffected. The incident was still open when archived, after 1 h 4 min at the last update. Klaviyo said it had identified the cause and was working on a fix, without specifying either.
Major incident
Critical incident: Login and page loading issues
Klaviyo reported a critical incident preventing some customers from logging in or loading app pages, starting 2026-10-08 15:00 UTC and resolved at 2026-10-08 16:13 UTC (reported duration: 1 h 12 min). A fix restored access; campaign and flow sending were not impacted, and customers logged out during the incident may need to log in again.
Major incident
Major incident: Issue with Time Delays in FlowsMajor incident
Major incident: Elevated errors for SMS opt-ins, scheduling, and sendingMajor incident
Major incident: Meta Services DisruptionMajor incident
Critical incident: WhatsApp DisruptionMajor incident
Major incident: Shopify API OutageMajor incident
Critical incident: Klaviyo Service DisruptionMajor incident
Major incident: Real-time segmentation delaysMajor incident
Major incident: Issues with Campaign Sending and SchedulingMajor incident

Full Klaviyo change timeline, with diffs →

Status incident history

Klaviyo status incidents per year
010203040↑ incidents201620172018201920202021202220232024202520262836413233332330354728
Grey: all non-maintenance incidents. Orange: major or critical. Years before Oct 2026 come from the vendor’s own status history.
Data table
YearIncidentsMajor/critical
2016280
2017362
2018414
2019323
2020334
2021337
2022233
2023302
20243513
20254713
20262810
Incidents per month, last 36 months
By impact as reported by the vendor. Maintenance excluded.
Data table
MonthImpactIncidents
2023-10minor2
2023-10none5
2023-11minor1
2023-11none1
2023-12major1
2023-12none2
2024-01none1
2024-02major2
2024-02minor1
2024-02none3
2024-03major3
2024-03none2
2024-04critical1
2024-04major1
2024-04minor2
2024-05critical1
2024-05minor1
2024-06critical1
2024-06minor1
2024-06none1
2024-07major1
2024-07minor1
2024-08critical2
2024-08minor1
2024-08none1
2024-09minor1
2024-10major1
2024-10minor4
2024-10none1
2024-12minor1
2025-02critical1
2025-02major2
2025-02none1
2025-03major1
2025-03minor2
2025-03none5
2025-04critical1
2025-04minor5
2025-04none1
2025-05critical1
2025-05none1
2025-06major1
2025-06minor3
2025-07minor1
2025-07none1
2025-08minor1
2025-08none1
2025-09minor5
2025-10critical1
2025-10major1
2025-10minor1
2025-10none2
2025-11major2
2025-11none1
2025-12major2
2025-12minor1
2025-12none2
2026-01major1
2026-03major1
2026-04minor1
2026-05critical1
2026-05minor4
2026-06critical1
2026-06major2
2026-06minor2
2026-07major1
2026-07minor4
2026-08major1
2026-08minor2
2026-08none1
2026-09minor3
2026-10critical1
2026-10major1
2026-10minor1

Silent edits

No silent edits or deletions detected for Klaviyo yet. We compare every 10-minute snapshot of each incident; 7 ordinary revisions (new updates, status changes) were seen.

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Pricing, trust and legal pages

Page snapshot history
PricingPrivacy policySubprocessorsTerms of serviceTrust / security26Jul2Aug91623306Sep1320274Oct11182026-10-17 Privacy policy: baseline2026-10-17 Subprocessors: baseline2026-10-17 Terms of service: baseline2026-10-17 Pricing: baseline2026-10-17 Trust / security: baseline
One dot per archived version. Grey = first archived (baseline), orange = text changed.
Data table
DatePageChange
2026-10-17Privacy policybaseline
2026-10-17Subprocessorsbaseline
2026-10-17Terms of servicebaseline
2026-10-17Pricingbaseline
2026-10-17Trust / securitybaseline
PageURLVersionsLast changedLast fetched OKHistory
Privacy policypartialklaviyo.com/privacy12026-10-17none yet
Subprocessorsklaviyo.com/legal/subprocessors12026-10-172026-10-17none yet
Terms of serviceklaviyo.com/terms12026-10-172026-10-17none yet
Pricingklaviyo.com/pricing12026-10-172026-10-17none yet
Trust / securitytrust.klaviyo.com12026-10-172026-10-17none yet

No changes since the first snapshot. Each change links to its diff: the changed passages with a few words of context, never a full copy of the page.

Incident timeline

Latest 100 of 366 incidents. Full list: last 90 days · JSON · Markdown

Started (UTC)IncidentImpactDuration
Flow Sending Delaysmajor4.8 h
Analytics Events Processing Delaysminor2.1 h
Login and page loading issuescritical1.2 h
Flow sending delaysminor2.0 h
Flow sending delaysminor2.6 h
Sending delays for event-triggered flowsminor4.3 h
Issue with Time Delays in Flowsmajor3.6 h
Delays in real-time segmentationminor1.4 h
Campaign scheduling errorsnone9 min
Delays affecting campaign scheduling, preview emails, and double opt-in confirmationsminor1.1 h
Sync Tasks Failingminor1.4 h
Elevated errors for SMS opt-ins, scheduling, and sendingmajor33 min
Catalog Webhook Processing Delaysminor43 h
Klaviyo Loading Errors and Sending Delaysminor1.4 h
Yahoo PH01 Block — Email Bounces to Yahoo/AOL Recipientsminor2.0 h
Meta Services Disruptionmajor2.7 h
Errors when attempting to select templates for campaignsminor59 min
Campaign sending delaysminor3.6 h
WhatsApp Disruptioncritical5.8 h
Shopify API Outagemajor2.9 h
SMS Event Processing Delaysminor3.9 h
Page loading errorsminor1.4 h
Campaign and flow page loading errorsminor9.5 h
Processing delaysminor18 h
Klaviyo Service Disruptioncritical2 d
API 503 Errorsminor47 min
Real-time segmentation delaysmajor30 min
Issues with Campaign Sending and Schedulingmajor1.2 h
Users with access to multiple accounts being unable to switch accountsnone1.5 h
Data processing delaysminor2.4 h
Template Cloning Functionalitymajor38 min
Cloudflare incident disrupting Klaviyonone-102 min
Customer Agent Follow Up Prompts not Appearingmajor39 min
Klaviyo Helpdesk, Customer Hub, and Customer Agent services Outagemajor1.6 h
Cloudflare incident disrupting onsite eventsmajor5.1 h
Facebook Ads are not syncing correctlynone11 h
SMS Events Processing Delaysminor1.4 h
Template Tag redirecting issuenone0 min
Widespread Access Outagecritical32 h
Klaviyo App Access Issuesnone16 min
Consent pagesmajor15 min
Delay in Real-Time Event Processingminor5.8 h
Campaigns List Viewminor10 d
Event-triggered flow delaysminor16 min
Omnichannel Campaign Resendsminor1.4 h
Real-time segmentation delaysminor3.2 h
Klaviyo App Access Issuesnone0 min
Delays in event-based flow processingminor34 min
Delays in Event Processingminor30 min
Duplicate Flow Sendsnone23 h
Delays in email & mobile push event processingminor2.1 h
Help Center and Klaviyo.com slowness in APACminor39 min
Klaviyo login issuemajor2.3 h
Delay in Analytics Processingminor38 min
Issues Accessing Klaviyo.comnone22 min
Delayed flow processing and message sendingcritical4.0 h
Delays in Email Sendingminor1.8 h
Disrupted Event Processing for All Customerscritical28 h
Issues with Klaviyo Campaignsnone41 min
Campaign Analytics Not Populatingminor2.1 h
Conversion Events Not Counting Toward Attributionminor1.8 h
Segment-based campaignsminor1.3 h
Delayed message sendingminor9.4 h
Delayed event processing for some Shopify usersnone1.8 h
Klaviyo reviews submission issuesnone0 min
Issues with custom profile property availabilitynone4 d
Delay in SMS Sendingminor44 min
Issues with Email and Push Campaignsmajor2.1 h
SMS MFA Codes not sendingnone58 min
Klaviyo log-in issuenone5.7 h
Delayed Email and SMS Sendsminor3.4 h
Klaviyo Developer Documentation Portal Outagecritical32 min
Partial API Outage & Delays in Event Processingmajor1.8 h
SMS MFA Codes Not Sendingnone5.4 h
Intermittent outages impacting application and sendingmajor5.3 h
Delays in some review requestsminor31 d
Issues with Klaviyo Application and APIsminor43 min
Klaviyo.com down for some visitors receiving 431 errorsmajor1.3 h
Delays in real-time segmentation processingminor5.8 h
Klaviyo Login Issuenone20 min
Delays in list and segment exportsminor50 min
Delays in flows processingminor3.2 h
Delay in processing Active On Site eventsminor4.0 h
Profile Delete and Merge Issueminor1.4 h
Campaign Scheduling Errorcritical1.0 h
Double opt-in email sending errorsnone24 h
Site and API Inaccessibilitycritical1.6 h
Site and API Inaccessibilitymajor4.2 h
Intermittent page load issues in-appminor2.0 h
Temporary disruption to open and click datanone0 min
Issues with Site and API Accessibilitycritical2.7 h
Back in stock on-site forms failing for Shopify widget usersminor0 min
SMS Sending Failures for Toll Free Numbers with Unbranded Shortened Linkscritical13 h
Intermittent Distortion of Page Elements in Klaviyominor28 min
Real time segmentation delayed by up to two hoursminor1.4 h
Intermittent Klaviyo Inaccessibilityminor3.6 h
Flows in-app experience & message sending outagemajor1.3 h
Delayed segmentation using profile propertiescritical6.4 h
Flows Builder Errorsmajor1.1 h
Errors accessing Klaviyomajor2.0 h