Outage in Klaviyo

Duplicate Flow Sends

Resolved Minor

July 02, 2025 - Started 10 months ago - Lasted about 23 hours
Official incident page

Incident Report

From 1:39-2:47PM US/Eastern on 7/2/25, Klaviyo users may have had duplicate flow messages sent to their profiles. Customers received the original message as expected, but may have received duplicate versions in the minutes to follow. Duplicate sending is no longer occurring. Our Engineering Team is investigating any downstream effects and will provide an update once we have more information.

Trusted by 1,000+ teams

The Status Page Aggregator with Early Outage Detection

Stop finding out about outages from your users. Monitor 6,320+ cloud services and get alerted the second something breaks.

Start Free Trial

No credit card
14-day trial
2-minute setup

Latest Updates ( sorted recent to last )

RESOLVED 10 months ago - at 07/03/2025 06:29PM

The team continues to work through the appropriate adjustments to billing as a result of these duplicate sends. We expect to follow up with impacted customers early next week with more information once this work has been completed.

IDENTIFIED 10 months ago - at 07/02/2025 10:58PM

We're continuing to work through repairs to billing as a result of the duplicate sends and will provide credits to the impacted accounts. We'll provide another update once we have more information to share.

IDENTIFIED 10 months ago - at 07/02/2025 07:41PM

From 1:39-2:47PM US/Eastern on 7/2/25, Klaviyo users may have had duplicate flow messages sent to their profiles. Customers received the original message as expected, but may have received duplicate versions in the minutes to follow. Duplicate sending is no longer occurring.

Our Engineering Team is investigating any downstream effects and will provide an update once we have more information.

Latest Klaviyo outages

Real-time segmentation delays - 27 days ago

Issues with Campaign Sending and Scheduling - 3 months ago

Users with access to multiple accounts being unable to switch accounts - 4 months ago

Data processing delays - 4 months ago

Template Cloning Functionality - 4 months ago

The Status Page Aggregator with Early Outage Detection

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 · 6320 services available

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