All Systems Operational

Uptime over the past 90 days. View historical uptime.
Klaviyo App Operational
90 days ago
99.82 % uptime
Today
Klaviyo App Operational
90 days ago
99.82 % uptime
Today
Klaviyo Support Operational
Klaviyo API Operational
90 days ago
99.98 % uptime
Today
Email Sending Operational
90 days ago
100.0 % uptime
Today
Campaign Email Sending Operational
90 days ago
100.0 % uptime
Today
Flow Email Sending Operational
90 days ago
100.0 % uptime
Today
Email Deliverability Operational
Email Content Operational
SMS Sending Operational
90 days ago
99.92 % uptime
Today
SMS Sending - Toll Free Number SMS Operational
90 days ago
100.0 % uptime
Today
SMS Sending - Toll Free Number MMS Operational
90 days ago
100.0 % uptime
Today
SMS Sending - Short Code SMS Operational
90 days ago
100.0 % uptime
Today
SMS Sending - Short Code MMS Operational
90 days ago
100.0 % uptime
Today
SMS Sending - Other Operational
SMS Deliverability Operational
SMS Content Operational
SMS Number Provisioning Operational
WhatsApp Operational
90 days ago
99.06 % uptime
Today
Mobile Push Sending Operational
90 days ago
100.0 % uptime
Today
Integrations Operational
90 days ago
99.96 % uptime
Today
Integrations - Shopify Operational
90 days ago
99.95 % uptime
Today
Integrations - WooCommerce Operational
90 days ago
99.96 % uptime
Today
Integrations - BigCommerce Operational
90 days ago
99.96 % uptime
Today
Integrations - Magento Operational
90 days ago
99.98 % uptime
Today
Integrations - Magento 2 Operational
90 days ago
99.98 % uptime
Today
Integrations - Other Operational
Analytics Operational
90 days ago
99.96 % uptime
Today
Segmentation Operational
90 days ago
99.96 % uptime
Today
Reviews Operational
90 days ago
100.0 % uptime
Today
Flow Triggering Operational
List Subscription Operational
Signup Forms Operational
Unsubscribe & Preference Pages Operational
Klaviyo.com Operational
Klaviyo Help Center Operational
Klaviyo Developers Operational
Profiles Operational
K:Service Operational
90 days ago
100.0 % uptime
Today
Customer Agent Operational
90 days ago
100.0 % uptime
Today
Customer Hub Operational
90 days ago
100.0 % uptime
Today
Helpdesk Operational
90 days ago
100.0 % uptime
Today
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Jul 12, 2026

No incidents reported today.

Jul 11, 2026

No incidents reported.

Jul 10, 2026
Catalog Webhook Processing Delays
Resolved - The repair to catch up on product update webhooks from the window of impact has been completed, and affected product data is up to date. This incident has been resolved.
Jul 10, 17:01 EDT
Update - Product updates from ecommerce integrations are continuing to sync normally in real time. A background repair to fully update records from the earlier impact window (9:45 PM to 11:13 PM US/Eastern on July 8, 2026) is still in progress. We will confirm once this repair is complete.
Jul 9, 12:13 EDT
Monitoring - As of 11:13 PM US/Eastern on July 8, 2026, we have resumed processing webhooks. This means all new webhooks from integrations which use webhooks to update products are now syncing in real time.
Our Engineering Team is working implement a repair to catch up on any product update webhooks from during window of impact (9:45 PM and 11:13 PM US/Eastern July 8, 2026). We will confirm once the repair has been complete and the incident has been fully resolved.
Jul 9, 00:34 EDT
Identified - As of 9:45 PM US/Eastern on July 8, 2026, we paused processing new webhooks for product catalogs while we continue working on a fix. Catalog data, including in Templates and Customer Hub, will remain out of date until syncing resumes.

Our engineering team is actively working to restore realtime catalog updates. We'll provide updates as soon as more information is available.
Jul 8, 23:14 EDT
Investigating - At 4:00 PM US/Eastern on July 8, 2026, we identified delays syncing product updates from integrations using webhooks. This is causing catalog data, including in Templates and the Customer Hub, to not update in real time. Customer may see product data being out of date by up to 4 hours. Sending is not impacted but the product data in templates may not reflect real-time information.

We are working to resolve this as quickly as possible and will share another update shortly.
Jul 8, 21:52 EDT
Jul 9, 2026
Data Infrastructure Maintenance
Completed - The scheduled maintenance has been completed.
Jul 9, 19:00 EDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 9, 18:00 EDT
Scheduled - Beginning at 6:00 PM US/Eastern on Thursday, July 9, 2026, Klaviyo's Engineering team will perform maintenance on our infrastructure for consent.

We expect the maintenance period to last approximately 1 hour. During this time, in-app and API operations related to SMS and Whatsapp Consent may be temporarily unavailable. This includes subscribes and unsubscribes. Please note that no data will be lost during this maintenance and these features should run as expected once maintenance has completed.
Jul 8, 12:05 EDT
Jul 8, 2026
Jul 7, 2026
Klaviyo Loading Errors and Sending Delays
Resolved - All systems are operating normally. This incident has been resolved.
Jul 7, 12:56 EDT
Monitoring - Sending delays have recovered, and login and navigation are operating normally. We continue to monitor closely and appreciate your patience throughout this incident.
Jul 7, 12:47 EDT
Update - Campaign and flow sends are now delayed by less than 30 minutes and are continuing to recover. Login and navigation are operating normally. We will share another update shortly.
Jul 7, 12:32 EDT
Identified - Performance issues affecting login and general navigation in Klaviyo have recovered, and those areas are now operating normally. Some customers may still be experiencing delays with sends while we work to fully restore normal processing. We have identified the cause and are working to resolve the remaining impact as quickly as possible. We will share another update shortly.
Jul 7, 11:56 EDT
Investigating - Customers may be experiencing slower than usual performance when loading or navigating Klaviyo, and some sends may be delayed. We are actively investigating. We will share another update as soon as we have more information.
Jul 7, 11:33 EDT
Jul 6, 2026
Data Infrastructure Maintenance
Completed - The scheduled maintenance has been completed.
Jul 6, 19:02 EDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jul 6, 18:02 EDT
Scheduled - Beginning at 6:00 PM (US Eastern Time) on Monday, July 6, 2026, Klaviyo's Engineering team will perform maintenance on our infrastructure for consent.

We expect the maintenance period to last approximately 1 hour. During this time, in-app and API operations related to SMS and Whatsapp Consent may be temporarily unavailable. This includes subscribes and unsubscribes. Please note that no data will be lost during this maintenance and these features should run as expected once maintenance has completed.
Jul 6, 18:01 EDT
Jul 5, 2026

No incidents reported.

Jul 4, 2026

No incidents reported.

Jul 3, 2026

No incidents reported.

Jul 2, 2026
Yahoo PH01 Block — Email Bounces to Yahoo/AOL Recipients
Resolved - The block within the Yahoo infrastructure that resulted in these elevated bounces has been resolved. Customers can safely resend to bounced recipients from this time period. This incident has been resolved.
Jul 2, 10:17 EDT
Investigating - Starting at 02:30AM US/Eastern on 07/02/2026, a subset of customers are currently experiencing an increase in bounced emails to Yahoo and AOL recipients with the reason of "554 Message not allowed - [PH01] Email not accepted for policy reasons.".

Our Engineering and Deliverability teams are actively investigating and working with Yahoo to resolve the issue. We do not recommend resending to those bounced recipients at this moment in time.
Jul 2, 08:17 EDT
Jul 1, 2026

No incidents reported.

Jun 30, 2026

No incidents reported.

Jun 29, 2026

No incidents reported.

Jun 28, 2026

No incidents reported.

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