Customer.io Message Sending Status

Check if Customer.io Message Sending is down, recent outages, user-reported issues, and outages map.

Is Customer.io Message Sending down right now?

Customer.io Message Sending is working normally

Last checked from Customer.io's status page

Customer.io Message Sending not working today?

 

Customer.io Message Sending outages and problems reported today

Working Normally
Possible Incident
Confirmed Outage

This chart displays the number of user-reported issues 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. We only consider an issue widespread if there are multiple reports within a short timeframe.

Recent Customer.io Message Sending Outages and Downtime History

IsDown has tracked 45 incidents for Customer.io Message Sending since started monitoring Customer.io status in April 2020. We collect data from 4484+ services, and normalize the data to give you a clear picture of the impact of the outage.

Date Status Incident Duration
Sep 12, 2025
03:02 PM EDT
Minor Some customers in our US region are experiencing delays 19 minutes
Jul 18, 2025
06:29 AM EDT
Minor Some customers on the US Data Center may experience Message Delays. about 9 hours
May 19, 2025
01:41 AM EDT
Minor Delayed processing for a small proportion of customer initiated actions and data ingestion 44 minutes
May 06, 2025
08:19 PM EDT
Minor Delays in sending and UI experience 20 minutes
Apr 07, 2025
04:13 PM EDT
Minor Transactional API delays 39 minutes
Mar 30, 2025
09:01 AM EDT
Minor Sending Delays 15 minutes
Feb 25, 2025
02:05 PM EST
Minor Data processing in EU Region is delayed about 1 hour
Feb 03, 2025
04:26 AM EST
Major Sending and Processing impacted for some customers in the EU Data Center 10 minutes
Dec 08, 2024
10:28 AM EST
Major Issue loading email editors and saving emails for some US customers. 19 minutes
Dec 02, 2024
01:06 PM EST
Minor Some US customers may experiece issues accessing their Workspace and message delays about 1 hour
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Customer.io Message Sending problems reported by users

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Frequently Asked Questions

Is Customer.io Message Sending down today?

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.

What is the current Customer.io Message Sending status?

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.

Is there a Customer.io Message Sending outage now?

No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.

Is Customer.io Message Sending down today or just slow?

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.

How are Customer.io Message Sending outages detected?

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.

Is Customer.io Message Sending having an outage right now?

Customer.io Message Sending last outage was on September 12, 2025 with the title "Some customers in our US region are experiencing delays"

Customer.io down for everyone or just me?

  • Check on the top of the page if there are any reported problems by other users.
  • Find their support at their official website.
  • Find their support contact at their official status page.

What is a Status Page Aggregator?

A Status Page Aggregator centralizes the status updates from multiple service providers into one dashboard, allowing you to monitor and receive alerts about outages or issues from all your critical services in one place.

How can a Status Page Aggregator benefit our business?

The Status Aggregator brings you the convenience of monitoring all your critical services in one place, eliminating the need to check the status on multiple websites. It ensures timely alerts on service disruptions, helping you quickly address issues and minimize operational impacts.

How IsDown compares to DownDetector?

IsDown and DownDetector help users determine if a service 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. The integration allows us to provide more details about the outage, 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.

Want to be informed about Customer.io status changes?

IsDown offers an easy way to monitor Customer.io with maximum flexibility

Major Outages Notifications

IsDown monitors Message Sending for major outages. A major outage is when Message Sending experiences a critical issue that severely affects one or more services/regions. When Customer.io marks an incident as a major outage, IsDown updates its internal status, the customer status page and dashboard. Depending on the customer settings, IsDown will also send notifications.

Minor Outages Notifications

IsDown monitors Customer.io status page for minor outages. A minor outage is when Message Sending experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. When a minor outage occurs, IsDown updates its internal status and shares that information on the customer status page. Depending on the customer settings, IsDown will also send notifications.

Outage Details

IsDown collects all information from the outages published in Customer.io status page to provide the most accurate information. If available, we gather the title, description, time of the outage, status, and outage updates. Another important piece of information is the affected services/regions which we use to filter the notifications that impact your business.

Maintenance Feed

Customer.io publishes scheduled maintenance events on their status page. IsDown collects all the information for each event and creates a feed that people can follow to ensure they are not surprised by unexpected downtime or problems. We also send the feed in our weekly report, alerting the next maintenances that will take place.

Component Filtering

IsDown monitors Customer.io and all their 15 components that can be affected by an outage. IsDown allows you to filter the notifications and status page alerts based on the components you care about. For example, you can choose which components or regions affect your business and filter out all other outages. This way you avoid alert fatigue in your team.

Early Outage Detection

Customer.io and other vendors don't always report outages on time. Our crowdsourced status platform helps you stay ahead of outages. Users report issues and outages, sharing details on what problems they are facing. We use that info to provide early signs of outages. This way, even without an official update, you can stay ahead of possible problems.

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