OutageDB

CustomerIO outage history and status

Is CustomerIO down right now?

No
All Systems Operational Official status as of Oct 26, 2026, 16:17 UTC (refreshing…)
99.99%
uptime, 90 days
6
incidents, 90 days
27 min
median time to fix
Sep 19, 2026
last incident

CustomerIO components

Third-Party Services

CustomerIO outage history

Nov: no complete dataNov Dec: 4 incidents, 0 min of major outage 4 Dec Jan: 3 incidents, 0 min of major outage 3 Jan Feb: 3 incidents, 0 min of major outage 3 Feb Mar: 3 incidents, 0 min of major outage 3 Mar Apr: 7 incidents, 19 min of major outage 7 Apr May: 3 incidents, 0 min of major outage 3 May Jun: 9 incidents, 261 min of major outage 9 Jun Jul: 8 incidents, 56 min of major outage 8 Jul Aug: 2 incidents, 0 min of major outage 2 Aug Sep: 3 incidents, 0 min of major outage 3 Sep Oct: 0 incidents, 0 min of major outage Oct
CustomerIO incidents per month, last 12 months. Red: months with a major or critical outage. Shaded: before our complete history.
Started (UTC)IncidentImpactDuration
Sep 19, 2026, 22:50 UTC Some US customers may experience delays in message sending
Message Sending
 Minor 27 min
Sep 4, 2026, 12:16 UTC Reduced Deliverability to Microsoft-Hosted Email Addresses
Message Sending
 No impact 1 h 19 min
Sep 3, 2026, 17:29 UTC Investigating issues with the Agent Minor 5 min
Aug 5, 2026, 17:36 UTC Customer.io UI is inaccessible
Management Interface
 No impact 26 min
Aug 3, 2026, 07:08 UTC Delays in processing and UI inaccessible for some customers in the US datacentre
Data Processing, Management Interface
 Minor 33 min
Jul 31, 2026, 14:24 UTC Issues accessing EU accounts
Management Interface
 Major 15 min
Jul 23, 2026, 08:27 UTC Some EU users are experiencing delays in processing
Data Processing, Management Interface
 Minor 1 h 37 min
Jul 20, 2026, 21:35 UTC Some customers are experiencing data processing and message-sending delays
Data Processing, Message Sending
 Minor 1 h 23 min
Jul 20, 2026, 17:07 UTC Delays in message sending
Message Sending
 Major 40 min
Jul 15, 2026, 17:19 UTC Some customers are experiencing data processing delays
Data Processing
 Minor 2 h 26 min
Jul 10, 2026, 17:28 UTC Delays processing send events in some environments
Message Sending
 No impact 41 min
Jul 3, 2026, 09:07 UTC User Interface is currently unavailable for some users in EU. Data processing delays
Data Processing, Management Interface
 Minor 2 h 03 min
Jul 2, 2026, 13:51 UTC User Interface is currently unavailable, data processing delays
Data Processing, Management Interface
 Minor 25 min
Jun 18, 2026, 20:06 UTC Some customers are currently unable to access the account Billing page in our UI
Management Interface
 Minor 28 min
Jun 13, 2026, 21:18 UTC Investigating Connectivity Issues Major 2 h 42 min
Jun 10, 2026, 04:45 UTC Delays in processing requests
Data Processing, Message Sending
 Minor 32 min
Jun 9, 2026, 15:49 UTC AI Agent and LLM Campaign Actions Disruption No impact 1 h 07 min
Jun 5, 2026, 12:30 UTC Some customers seeing delays setting up Pipelines in new EU workspaces
Management Interface
 Minor 1 h 04 min
Jun 4, 2026, 23:50 UTC Salesforce and Hubspot syncs might be delayed for some EU customers
Data Processing
 Minor 1 h 25 min
Jun 4, 2026, 13:34 UTC Customer.io UI is currently inaccessible
Management Interface
 Minor 8 min
Jun 2, 2026, 21:18 UTC UI inaccessible
Management Interface
 Major 1 h 39 min
Jun 1, 2026, 11:40 UTC Reverse ETL Syncs not being run for some EU Customers
Data Processing
 Minor 31 min
May 29, 2026, 16:26 UTC Some customers are seeing broadcast delivery delays (emails, push notifications, and webhooks)
Message Sending
 Minor 42 min
May 25, 2026, 15:27 UTC Customers in the EU region may experience delays in message sending
Message Sending
 Minor 43 min
May 6, 2026, 16:00 UTC Some customers in our EU region may experience errors and delays
Data Collection, Data Processing, Management Interface
 Minor 26 min

50 incidents in our archive since November 5, 2025.

When and where CustomerIO fails

By weekday

Most incidents start on Mon.

  • Mon13
  • Tue5
  • Wed10
  • Thu9
  • Fri10
  • Sat3
  • Sun0

Most affected, last 12 months

  • Management Interface21
  • Data Processing19
  • Message Sending13
  • Data Collection2

When CustomerIO went down with others

Other email & messaging apis services

FAQ

Is CustomerIO down right now?
At our last check CustomerIO's official status page reported: All Systems Operational. This page refreshes the status every few minutes.
How often does CustomerIO go down?
CustomerIO reported 6 incidents in the last 90 days (1 major or critical), with 15 minutes of major outage: 99.99% uptime.
When was the last CustomerIO outage?
The latest reported incident started on Sep 19, 2026, 22:50 UTC: "Some US customers may experience delays in message sending", resolved after 27 min.
How long do CustomerIO outages last?
Half of CustomerIO's incidents in the last 90 days were resolved within 27 min.

Source: CustomerIO official status page · RSS of CustomerIO incidents · status badge for your site