# Is Customer.io down?

> Customer.io is operational. Checked 2026-11-01 21:00 UTC.

- Official status page: https://status.customer.io
- Web page: https://outages.cc/customerio
- JSON: https://outages.cc/api/v1/providers/customerio
- RSS: https://outages.cc/feed.xml?providers=customerio

## Active incidents

- [Customer.io: Issues accessing EU accounts](https://outages.cc/outages/customerio-298j2l6mf9i.md): Partial outage, started 2026-07-31 14:24 UTC. Customer.io reported that the Management Interface did not work for EU accounts. Customer.io stated that the incident is resolved.
- [Customer.io: Delays in message sending](https://outages.cc/outages/customerio-lgy8ueg57g.md): Partial outage, started 2026-07-20 17:07 UTC. Customer.io reports delays in message sending that affect the Message Sending component. Customer.io states that this incident is resolved.
- [Customer.io: Customer.io UI is currently unavailable for some customers](https://outages.cc/outages/customerio-1hb4wxd8g6c.md): Degraded performance, started 2026-10-27 19:11 UTC. Customer.io reports that the management interface is unavailable for some customers. Customer.io later reported that the issue is resolved. The outage lasted from 27 October 2026 until 1 November 2026.
- [Customer.io: Some US customers may experience delays in message sending](https://outages.cc/outages/customerio-2f7lpf1yfu9.md): Degraded performance, started 2026-09-19 22:50 UTC. Customer.io reports delays in message sending for some customers in the US. The Message Sending component is affected. Customer.io reports that the incident is resolved.
- [Customer.io: Investigating issues with the Agent](https://outages.cc/outages/customerio-28zq5laxedg.md): Degraded performance, started 2026-09-03 17:29 UTC. Customer.io reported problems with the Agent. Customer.io later stated that the incident is resolved. The incident started on 3 September 2026 and was resolved on 1 November 2026.
- [Customer.io: Delays in processing and UI inaccessible for some customers in the US datacentre](https://outages.cc/outages/customerio-h8fxv5dhab.md): Degraded performance, started 2026-08-03 07:08 UTC. Customer.io reports delays in data processing and an inaccessible management interface in the US datacentre. Customer.io states that the incident is resolved. The provider did not give the duration.
- [Customer.io: Some EU users are experiencing delays in processing](https://outages.cc/outages/customerio-22iwp6mpwkw.md): Degraded performance, started 2026-07-23 08:27 UTC. Customer.io reports delays in processing for some users in the EU. The delays affect Data Processing and the Management Interface. Customer.io states that the incident is resolved.
- [Customer.io: Some customers are experiencing data processing and message-sending delays](https://outages.cc/outages/customerio-m41kr7tbpp.md): Degraded performance, started 2026-07-20 21:35 UTC. Data processing and message sending have delays for some Customer.io customers. Customer.io reports that the incident is resolved and that all backlogs are processed. Customer.io did not give a resolution time.
- [Customer.io: Reduced Deliverability to Microsoft-Hosted Email Addresses](https://outages.cc/outages/customerio-4xhfpol9ij.md): Notice, started 2026-09-04 12:16 UTC. Message Sending has reduced deliverability to Microsoft-hosted email addresses. Customer.io reports that this issue is resolved. Microsoft resolved the underlying issue, and deliveries to Microsoft services return to normal.
- [Customer.io: Customer.io UI is inaccessible](https://outages.cc/outages/customerio-ssh0b4pr0g.md): Notice, started 2026-08-05 17:36 UTC. The Customer.io Management Interface is inaccessible. Customer.io reports that this incident is resolved.

## Last 90 days

10 incidents on 90 of the last 90 days.

No resolved incident in the last 90 days.