Outage in Klaviyo

SMS Events Processing Delays

Resolved Minor
October 29, 2025 - Started 7 days ago - Lasted about 1 hour
Official incident page

Incident Report

Starting at 1:00 PM US/Eastern, we began experiencing delays of up to 40 minutes for SMS events processing. SMS Sending is not impacted. We have identified the issue and are in the process of reverting a change to restore normal processing. We'll provide updates as soon as more information is available.
Components affected
Klaviyo Analytics Klaviyo Flow Triggering Klaviyo Segmentation

Need to monitor Klaviyo outages?

One place to monitor all your cloud vendors. Get instant alerts when an outage is detected.

Start Free Trial
Latest Updates ( sorted recent to last )
RESOLVED 7 days ago - at 10/29/2025 07:43PM

This incident has been resolved.

MONITORING 7 days ago - at 10/29/2025 07:27PM

We have mitigated the delays and we expect SMS event processing to be fully caught up within the next 20 minutes. There was no data loss as a result of this incident.

IDENTIFIED 7 days ago - at 10/29/2025 07:12PM

We are still working to restore normal processing of SMS events. A subset of customers may see delays of up to 90 minutes at this time. SMS Sending remains unaffected.

IDENTIFIED 7 days ago - at 10/29/2025 06:27PM

We want to acknowledge that downstream services (Segments and Flows) relying on the SMS events will also be impacted, until the event processing has caught up, which we expect to happen shortly.

We'll continue to provide updates as they are available.

IDENTIFIED 7 days ago - at 10/29/2025 06:16PM

Starting at 1:00 PM US/Eastern, we began experiencing delays of up to 40 minutes for SMS events processing.

SMS Sending is not impacted.

We have identified the issue and are in the process of reverting a change to restore normal processing. We'll provide updates as soon as more information is available.

Latest Klaviyo outages

Facebook Ads are not syncing correctly - 3 days ago
Widespread Access Outage - 16 days ago
Klaviyo App Access Issues - about 1 month ago
Consent pages - about 1 month ago
Delay in Real-Time Event Processing - about 2 months ago

The Status Page Aggregator Built for IT Teams

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 4522 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook