Companies / Klaviyo / incidents

Klaviyo: Duplicate Flow Sends

Affected components: Email SendingEmail Sending - Flow Email SendingSMS Sending - SMS Sending - OtherText Message Sending

Timeline of updates

1. identified2025-07-02 19:41 UTC

   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.

2. identified2025-07-02 22:58 UTC

   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.

3. resolved2025-07-03 18:29 UTC

   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.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Klaviyo profile · Recent Klaviyo incidents · Markdown · JSON