Check if Customer.io Message Sending is down, official outages, user-reported issues, and outages map.
Customer.io Message Sending is working normally
Check 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.
IsDown has tracked 51 incidents for Customer.io Message Sending since started monitoring Customer.io status in April 2020. We collect data from 4522+ services, and normalize the data to give you a clear picture of the impact of the outage. It will show official Customer.io Message Sending outages and also issues that we're started by a spike in crowdsource reports.
| Date | Incident | Duration |
|---|---|---|
|
Nov 04, 2025
03:46 PM EST
|
Minor
We are currently investigating this issue.
|
about 1 hour |
|
Oct 30, 2025
01:25 PM EDT
|
Major
Some US customers will experience errors in the UI and delays in data processing and sending. We...
|
about 5 hours |
|
Oct 29, 2025
04:02 PM EDT
|
Minor
We are currently investigating an issue where some customer may see delays in data processing and...
|
11 minutes |
|
Oct 23, 2025
05:26 PM EDT
|
Minor
We are currently investigating this issue. You may see delays in data processing and message send...
|
about 2 hours |
|
Oct 20, 2025
02:45 PM EDT
|
Minor
We are experiencing intermittent errors with our upstream provider for Twilio templates. Custome...
|
about 3 hours |
|
Sep 30, 2025
05:10 PM EDT
|
Minor
We have identified an issue that may cause some customers with accounts in the US to experience d...
|
12 minutes |
|
Sep 12, 2025
03:02 PM EDT
|
Minor
Our engineers have identified that some customers may be experiencing delays with data processing...
|
19 minutes |
|
Jul 18, 2025
06:29 AM EDT
|
Minor
Our team has identified an issue that is causing some messaging to encounter delays. Our team is ...
|
about 9 hours |
|
May 19, 2025
01:41 AM EDT
|
Minor
A small proportion of customers may experience degraded capabilities for data ingestion and custo...
|
44 minutes |
|
May 06, 2025
08:19 PM EDT
|
Minor
Some customers in the US datacenter are experiencing delays in message sending and may experience...
|
20 minutes |
See what users are saying about Customer.io Message Sending issues that impacted them and how they are affected by the outage. You can see if other users are experiencing the same issues and if there are any workarounds or solutions.
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Message Sending in Customer.io automates and manages the delivery of targeted emails, SMS, and push notifications to users based on their behaviors.
Monitoring Customer.io since April 2020
Message Sending is part of Customer.io. Check the Customer.io's status.
14 incidents in 2025
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 November 04, 2025 with the title "Some workspaces experiencing delays in campaign journeys and deliveries in US Data Center"
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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