# Is Customer.io down?

**No known problems: Customer.io's status page says operational** (Operational; last read 2026-11-11 01:32 UTC; source: [official status page](https://status.customerio.com))

## Open incidents
_No open incidents._

## Components
- Javascript Tracker: Operational
- Third-Party Services / Drag and drop email composer: Operational
- Data Collection: Operational
- Third-Party Services / Email Composer Image Uploads: Operational
- Data Processing: Operational
- Message Sending: Operational
- Management Interface: Operational
- Knowledge Base: Operational

## Last 90 days
- Incidents: 5 on 3 days
- Median duration: 27m; longest: 1h 19m
- Median time to acknowledge after down.guide's first evidence: n/a
- Postmortem rate for partial or major outages: n/a

## Recent incidents
- **Customer.io**: [Customers are Unable to add new Email Sending Domains](https://down.guide/DWN-95c4206922) (Partial outage; lasted 31m; started 2026-11-06 23:53 UTC; Management Interface)
- **Customer.io**: [Customer.io UI is currently unavailable for some customers](https://down.guide/DWN-e2b6d5f055) (Degraded; lasted 25m; started 2026-10-27 19:11 UTC; Management Interface)
- **Customer.io**: [Some US customers may experience delays in message sending](https://down.guide/DWN-28ecf849ec) (Degraded; lasted 27m; started 2026-09-19 22:50 UTC; Message Sending; us)
- **Customer.io**: [Reduced Deliverability to Microsoft-Hosted Email Addresses](https://down.guide/DWN-1ca6244164) (Operational; lasted 1h 19m; started 2026-09-04 12:16 UTC; Message Sending)
- **Customer.io**: [Investigating issues with the Agent](https://down.guide/DWN-3d99d4398b) (Degraded; lasted 5m; started 2026-09-03 17:29 UTC)

More: [history](https://down.guide/providers/customerio/history), [feed](https://down.guide/feed?provider=customerio), [badge](https://down.guide/badge/customerio.svg), JSON: https://down.guide/api/v1/providers/customerio

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