← Klaviyo Klaviyo status history 43 incidents over the last year, newest first; 99.97% uptime (90 days), 99.96% uptime (12 months). History from before down.guide started reading the page is imported from Klaviyo's own archive.
Campaign Sending Delays Oct 29, 2026, 2:55 PM UTC lasted 2h 10m Email Sending, Text Message Sending, WhatsApp Sending +1 us
Elevated flow recipient skips Oct 28, 2026, 9:49 PM UTC lasted 23h 43m Email Sending, Text Message Sending, WhatsApp Sending +2 us
Outbound Webhook Delays Oct 22, 2026, 10:20 PM UTC lasted 14h 47m Analytics us
Flow Sending Delays Oct 17, 2026, 5:01 PM UTC lasted 4h 49m Email Sending, Text Message Sending, WhatsApp Sending +3
Analytics Events Processing Delays Oct 9, 2026, 12:10 AM UTC lasted 2h 6m Segments, Profiles, Analytics
Login and page loading issues Oct 8, 2026, 3:00 PM UTC lasted 1h 13m Klaviyo App
Flow sending delays Sep 21, 2026, 3:56 PM UTC lasted 2h 3m Email Sending, Text Message Sending, WhatsApp Sending +2
Flow sending delays Sep 17, 2026, 5:10 PM UTC lasted 2h 35m Email Sending, Text Message Sending, WhatsApp Sending +2
Sending delays for event-triggered flows Sep 14, 2026, 9:30 PM UTC lasted 4h 21m Email Sending, Text Message Sending, WhatsApp Sending +2
Issue with Time Delays in Flows Aug 27, 2026, 12:09 AM UTC lasted 3h 34m Email Sending, Text Message Sending, WhatsApp Sending +2 us
Delays in real-time segmentation Aug 19, 2026, 5:15 PM UTC lasted 1h 23m Segments, Profiles
Campaign scheduling errors Aug 12, 2026, 6:04 PM UTC lasted 9m Email Sending, Text Message Sending, WhatsApp Sending +1 us
Delays affecting campaign scheduling, preview emails, and double opt-in confirmations Aug 5, 2026, 4:47 PM UTC lasted 1h 8m Email Sending, Profiles, Campaign Editor us
Sync Tasks Failing Jul 23, 2026, 2:35 PM UTC lasted 1h 26m Server-side, Lists, WooCommerce +3 us
Elevated errors for SMS opt-ins, scheduling, and sending Jul 21, 2026, 8:36 PM UTC lasted 33m Text Message Sending, WhatsApp Sending
Catalog Webhook Processing Delays Jul 9, 2026, 1:52 AM UTC lasted 1d 19h Shopify, WooCommerce, BigCommerce +3 us
Klaviyo Loading Errors and Sending Delays Jul 7, 2026, 3:33 PM UTC lasted 1h 24m Klaviyo App, Email Sending, Email Sending
Yahoo PH01 Block — Email Bounces to Yahoo/AOL Recipients Jul 2, 2026, 12:17 PM UTC lasted 2h Email Deliverability us
Meta Services Disruption Jun 12, 2026, 2:49 PM UTC lasted 2h 41m Customer Agent, Helpdesk, WhatsApp Sending +1
Errors when attempting to select templates for campaigns Jun 10, 2026, 6:47 PM UTC lasted 59m
Campaign sending delays Jun 8, 2026, 9:10 PM UTC lasted 3h 39m Email Sending
WhatsApp Disruption Jun 6, 2026, 5:18 PM UTC lasted 5h 47m WhatsApp Sending us
Shopify API Outage Jun 3, 2026, 2:23 PM UTC lasted 2h 52m Shopify
SMS Event Processing Delays May 19, 2026, 8:36 PM UTC lasted 3h 54m Segments, Text Message Sending, Processing +1
Page loading errors May 19, 2026, 4:11 PM UTC lasted 1h 27m Klaviyo App, Email Sending, Email Sending +2
Campaign and flow page loading errors May 8, 2026, 3:02 PM UTC lasted 9h 29m Klaviyo App, Analytics
Processing delays May 8, 2026, 1:32 AM UTC lasted 17h 33m Server-side, Segments, Processing +1
Klaviyo Service Disruption May 5, 2026, 9:24 PM UTC lasted 2d 1h Klaviyo App, Email Sending, Email Sending +12
Users with access to multiple accounts being unable to switch accounts Dec 22, 2025, 10:37 PM UTC lasted 1h 30m
Data processing delays Dec 18, 2025, 4:10 AM UTC lasted 2h 26m Klaviyo App, Email Sending, Server-side +3 us
Template Cloning Functionality Dec 17, 2025, 1:11 AM UTC lasted 38m us
Cloudflare incident disrupting Klaviyo Dec 5, 2025, 10:42 AM UTC lasted 0m us
Customer Agent Follow Up Prompts not Appearing Dec 3, 2025, 7:57 PM UTC lasted 39m Customer Agent us
Klaviyo Helpdesk, Customer Hub, and Customer Agent services Outage Nov 28, 2025, 8:27 PM UTC lasted 1h 38m Customer Agent, Helpdesk, Customer Hub us
Cloudflare incident disrupting onsite events Nov 18, 2025, 1:58 PM UTC lasted 5h 7m Server-side, Sign-up Forms, Lists +1 us
Facebook Ads are not syncing correctly Nov 2, 2025, 7:03 AM UTC lasted 10h 38m Other
SMS Events Processing Delays Oct 29, 2025, 6:16 PM UTC lasted 1h 27m Segments, Processing, Analytics us
Template Tag redirecting issue Oct 24, 2025, 12:23 AM UTC lasted 0m Consent Pages
Widespread Access Outage Oct 20, 2025, 8:58 AM UTC lasted 1d 8h Shopify, Klaviyo App, Email Sending +19 us