Is Customer.io Message Sending Down? Check current status

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

Current Customer.io Message Sending status

Customer.io Message Sending is working normally

Updated from Customer.io official status page

Customer.io Message Sending not working for you?

Customer.io Message Sending service health. Issues reported in the last 24 hours

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.

Working Normally
Possible Incident
Confirmed Outage

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Customer.io Message Sending recent outages and downtime history

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
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Be the first to know when Customer.io Message Sending goes down

  • Monitor external dependencies in one place
  • Track outages in real-time
  • Keep your team or customers informed
  • Create private or public status pages

User comments about Customer.io Message Sending status

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.

No comments yet

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.

Need help? Try here:
Support at website.
Check their status page.

14 incidents in 2025

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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 November 04, 2025 with the title "Some workspaces experiencing delays in campaign journeys and deliveries in US Data Center"

How IsDown compares to DownDetector when monitoring Customer.io?

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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