# Klaviyo incident history

- **Klaviyo**: [Klaviyo app slowness](https://down.guide/klaviyo/DWN-bf492f4080) (Partial outage; lasted 1d 1h; started 2026-11-04 16:17 UTC; Klaviyo App, Analytics)
- **Klaviyo**: [Campaign Sending Delays](https://down.guide/klaviyo/DWN-7bb5c4556c) (Partial outage; lasted 2h 10m; started 2026-10-29 14:55 UTC; Email Sending, Text Message Sending, WhatsApp Sending +1; us)
- **Klaviyo**: [Elevated flow recipient skips](https://down.guide/klaviyo/DWN-cac6cf0437) (Degraded; lasted 23h 43m; started 2026-10-28 21:49 UTC; Email Sending, Text Message Sending, WhatsApp Sending +2; us)
- **Klaviyo**: [Outbound Webhook Delays](https://down.guide/klaviyo/DWN-0158b25a61) (Partial outage; lasted 14h 47m; started 2026-10-22 22:20 UTC; Analytics; us)
- **Klaviyo**: [Flow Sending Delays](https://down.guide/klaviyo/DWN-630d912e4d) (Partial outage; lasted 4h 49m; started 2026-10-17 17:01 UTC; Email Sending, Text Message Sending, WhatsApp Sending +3)
- **Klaviyo**: [Analytics Events Processing Delays](https://down.guide/klaviyo/DWN-b38ff88595) (Degraded; lasted 2h 6m; started 2026-10-09 00:10 UTC; Segments, Profiles, Analytics)
- **Klaviyo**: [Login and page loading issues](https://down.guide/klaviyo/DWN-159692ae01) (Major outage; lasted 1h 13m; started 2026-10-08 15:00 UTC; Klaviyo App)
- **Klaviyo**: [Flow sending delays](https://down.guide/klaviyo/DWN-aed501d5fe) (Degraded; lasted 2h 3m; started 2026-09-21 15:56 UTC; Email Sending, Text Message Sending, WhatsApp Sending +2)
- **Klaviyo**: [Flow sending delays](https://down.guide/klaviyo/DWN-39c3dee701) (Degraded; lasted 2h 35m; started 2026-09-17 17:10 UTC; Email Sending, Text Message Sending, WhatsApp Sending +2)
- **Klaviyo**: [Sending delays for event-triggered flows](https://down.guide/klaviyo/DWN-adc20cceee) (Degraded; lasted 4h 21m; started 2026-09-14 21:30 UTC; Email Sending, Text Message Sending, WhatsApp Sending +2)
- **Klaviyo**: [Issue with Time Delays in Flows](https://down.guide/klaviyo/DWN-94eda48b01) (Partial outage; lasted 3h 34m; started 2026-08-27 00:09 UTC; Email Sending, Text Message Sending, WhatsApp Sending +2; us)
- **Klaviyo**: [Delays in real-time segmentation](https://down.guide/klaviyo/DWN-203e0b3a7e) (Degraded; lasted 1h 23m; started 2026-08-19 17:15 UTC; Segments, Profiles)
- **Klaviyo**: [Campaign scheduling errors](https://down.guide/klaviyo/DWN-31bbef8321) (Degraded; lasted 9m; started 2026-08-12 18:04 UTC; Email Sending, Text Message Sending, WhatsApp Sending +1; us)
- **Klaviyo**: [Delays affecting campaign scheduling, preview emails, and double opt-in confirmations](https://down.guide/klaviyo/DWN-6911039649) (Degraded; lasted 1h 8m; started 2026-08-05 16:47 UTC; Email Sending, Profiles, Campaign Editor; us)
- **Klaviyo**: [Sync Tasks Failing](https://down.guide/klaviyo/DWN-748add76be) (Degraded; lasted 1h 26m; started 2026-07-23 14:35 UTC; Server-side, Lists, WooCommerce +3; us)
- **Klaviyo**: [Elevated errors for SMS opt-ins, scheduling, and sending](https://down.guide/klaviyo/DWN-e6e9ebb11d) (Partial outage; lasted 33m; started 2026-07-21 20:36 UTC; Text Message Sending, WhatsApp Sending)
- **Klaviyo**: [Catalog Webhook Processing Delays](https://down.guide/klaviyo/DWN-6360d4d26c) (Degraded; lasted 1d 19h; started 2026-07-09 01:52 UTC; Shopify, WooCommerce, BigCommerce +3; us)
- **Klaviyo**: [Klaviyo Loading Errors and Sending Delays](https://down.guide/klaviyo/DWN-1453481a85) (Degraded; lasted 1h 24m; started 2026-07-07 15:33 UTC; Klaviyo App, Email Sending, Email Sending)
- **Klaviyo**: [Yahoo PH01 Block — Email Bounces to Yahoo/AOL Recipients](https://down.guide/klaviyo/DWN-0f824e2997) (Degraded; lasted 2h; started 2026-07-02 12:17 UTC; Email Deliverability; us)
- **Klaviyo**: [Meta Services Disruption](https://down.guide/klaviyo/DWN-7f36dd82cc) (Partial outage; lasted 2h 41m; started 2026-06-12 14:49 UTC; Customer Agent, Helpdesk, WhatsApp Sending +1)
- **Klaviyo**: [Errors when attempting to select templates for campaigns](https://down.guide/klaviyo/DWN-06e20d8857) (Degraded; lasted 59m; started 2026-06-10 18:47 UTC)
- **Klaviyo**: [Campaign sending delays](https://down.guide/klaviyo/DWN-cdb6fd0fd2) (Degraded; lasted 3h 39m; started 2026-06-08 21:10 UTC; Email Sending)
- **Klaviyo**: [WhatsApp Disruption](https://down.guide/klaviyo/DWN-1ba675e7a5) (Major outage; lasted 5h 47m; started 2026-06-06 17:18 UTC; WhatsApp Sending; us)
- **Klaviyo**: [Shopify API Outage](https://down.guide/klaviyo/DWN-7dca26365e) (Partial outage; lasted 2h 52m; started 2026-06-03 14:23 UTC; Shopify)
- **Klaviyo**: [SMS Event Processing Delays](https://down.guide/klaviyo/DWN-402aacbc4a) (Degraded; lasted 3h 54m; started 2026-05-19 20:36 UTC; Segments, Text Message Sending, Processing +1)
- **Klaviyo**: [Page loading errors](https://down.guide/klaviyo/DWN-6b989118a9) (Degraded; lasted 1h 27m; started 2026-05-19 16:11 UTC; Klaviyo App, Email Sending, Email Sending +2)
- **Klaviyo**: [Campaign and flow page loading errors](https://down.guide/klaviyo/DWN-69934e3f4b) (Degraded; lasted 9h 29m; started 2026-05-08 15:02 UTC; Klaviyo App, Analytics)
- **Klaviyo**: [Processing delays](https://down.guide/klaviyo/DWN-6f7d55da63) (Degraded; lasted 17h 33m; started 2026-05-08 01:32 UTC; Server-side, Segments, Processing +1)
- **Klaviyo**: [Klaviyo Service Disruption](https://down.guide/klaviyo/DWN-cff4ffef83) (Major outage; lasted 2d 1h; started 2026-05-05 21:24 UTC; Klaviyo App, Email Sending, Email Sending +12)
- **Klaviyo**: [API 503 Errors](https://down.guide/klaviyo/DWN-03f8a72366) (Degraded; lasted 47m; started 2026-04-26 07:24 UTC; Server-side; us)
- **Klaviyo**: [Real-time segmentation delays](https://down.guide/klaviyo/DWN-aeb6ed40b9) (Partial outage; lasted 30m; started 2026-03-27 04:46 UTC; Segments; us)
- **Klaviyo**: [Issues with Campaign Sending and Scheduling](https://down.guide/klaviyo/DWN-9ec3aa4322) (Partial outage; lasted 1h 11m; started 2026-01-12 11:12 UTC; Email Sending, Text Message Sending, Mobile Push Sending; us)
- **Klaviyo**: [Users with access to multiple accounts being unable to switch accounts](https://down.guide/klaviyo/DWN-4f6fdd86cd) (Degraded; lasted 1h 30m; started 2025-12-22 22:37 UTC)
- **Klaviyo**: [Data processing delays](https://down.guide/klaviyo/DWN-baa65ecc9a) (Degraded; lasted 2h 26m; started 2025-12-18 04:10 UTC; Klaviyo App, Email Sending, Server-side +3; us)
- **Klaviyo**: [Template Cloning Functionality](https://down.guide/klaviyo/DWN-7b35cca639) (Partial outage; lasted 38m; started 2025-12-17 01:11 UTC; us)
- **Klaviyo**: [Cloudflare incident disrupting Klaviyo](https://down.guide/klaviyo/DWN-b8e9a1c40e) (Degraded; lasted 0m; started 2025-12-05 10:42 UTC; us)
- **Klaviyo**: [Customer Agent Follow Up Prompts not Appearing](https://down.guide/klaviyo/DWN-cf7f929ba8) (Partial outage; lasted 39m; started 2025-12-03 19:57 UTC; Customer Agent; us)
- **Klaviyo**: [Klaviyo Helpdesk, Customer Hub, and Customer Agent services Outage](https://down.guide/klaviyo/DWN-d261bfa735) (Partial outage; lasted 1h 38m; started 2025-11-28 20:27 UTC; Customer Agent, Helpdesk, Customer Hub; us)
- **Klaviyo**: [Cloudflare incident disrupting onsite events](https://down.guide/klaviyo/DWN-e5d4afa9a3) (Partial outage; lasted 5h 7m; started 2025-11-18 13:58 UTC; Server-side, Sign-up Forms, Lists +1; us)
- **Klaviyo**: [Facebook Ads are not syncing correctly](https://down.guide/klaviyo/DWN-cb2781845c) (Degraded; lasted 10h 38m; started 2025-11-02 07:03 UTC; Other)
- **Klaviyo**: [SMS Events Processing Delays](https://down.guide/klaviyo/DWN-2120bc8720) (Degraded; lasted 1h 27m; started 2025-10-29 18:16 UTC; Segments, Processing, Analytics; us)
- **Klaviyo**: [Template Tag redirecting issue](https://down.guide/klaviyo/DWN-a5b3d845e9) (Degraded; lasted 0m; started 2025-10-24 00:23 UTC; Consent Pages)
- **Klaviyo**: [Widespread Access Outage](https://down.guide/klaviyo/DWN-2378b58bf9) (Major outage; lasted 1d 8h; started 2025-10-20 08:58 UTC; Shopify, Klaviyo App, Email Sending +19; us)

[Back to Klaviyo](https://down.guide/klaviyo)

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