Customer.io status updated
Customer.io Message Sending is working normally
This chart shows the number of user-reported issues for Customer.io Message Sending service health over the past 24 hours, grouped into 20-minute intervals. It's normal to see occasional reports, which may be due to individual user issues rather than a broader problem.
See where users report Customer.io Message Sending is down. The map shows recent Customer.io Message Sending outages from around the world.
Message Sending Outage MapIn the last 90 days, Customer.io had 4 incidents with a median duration of 52 minutes.
Incidents
Major Outages
Minor Incidents
Median Resolution
Check Customer.io Message Sending status history below. IsDown detects when Customer.io Message Sending is down, tracking both official outages and user-reported issues.
| Title | Started At | Duration |
|---|---|---|
|
Our engineers are currently investigating an issue where message sending is delayed. We thank you...
|
Jan 28, 2026 at 06:56 PM UTC
|
33 minutes |
|
We identified a recent change that might cause data delays. We are investigating.
|
Dec 08, 2025 at 06:12 PM UTC
|
about 2 hours |
|
Our team is aware of an issue with Campaign deliveries and Transactional emails going out. We are...
|
Nov 24, 2025 at 08:15 AM UTC
|
37 minutes |
|
We are currently investigating this issue.
|
Nov 04, 2025 at 08:46 PM UTC
|
about 1 hour |
|
Some US customers will experience errors in the UI and delays in data processing and sending. We...
|
Oct 30, 2025 at 05:25 PM UTC
|
about 5 hours |
|
We are currently investigating an issue where some customer may see delays in data processing and...
|
Oct 29, 2025 at 08:02 PM UTC
|
11 minutes |
|
We are currently investigating this issue. You may see delays in data processing and message send...
|
Oct 23, 2025 at 09:26 PM UTC
|
about 2 hours |
|
We are experiencing intermittent errors with our upstream provider for Twilio templates. Custome...
|
Oct 20, 2025 at 06:45 PM UTC
|
about 3 hours |
|
We have identified an issue that may cause some customers with accounts in the US to experience d...
|
Sep 30, 2025 at 09:10 PM UTC
|
12 minutes |
|
Our engineers have identified that some customers may be experiencing delays with data processing...
|
Sep 12, 2025 at 07:02 PM UTC
|
19 minutes |
Customer.io Message Sending isn't down. You can check Customer.io Message Sending status and incident details on the top of the page. IsDown continuously monitors Customer.io Message Sending official status page every few minutes. In the last 24 hours, there were 0 outages reported.
Customer.io Message Sending is currently operational. You can check Customer.io Message Sending status and incident details on the top of the page. The status is updated in almost real-time, and you can see the latest outages and issues affecting customers.
No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.
Currently there's no report of Customer.io Message Sending being slow. Check on the top of the page if there are any reported problems by other users.
IsDown monitors the Customer.io Message Sending official status page every few minutes. We also get reports from users like you. If there are enough reports about an outage, we'll show it on the top of the page.
Customer.io Message Sending last outage was on January 28, 2026 with the title "Some customers are experiencing delays with message sending"
IsDown and DownDetector help users determine if Customer.io is having problems. The big difference is that IsDown is a status page aggregator. IsDown monitors a service's official status page to give our customers a more reliable source of information instead of just relying on reports from users. The integration allows us to provide more details about Customer.io's Outages, like incident title, description, updates, and the parts of the affected service. Additionally, users can create internal status pages and set up notifications for all their third-party services.
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