Customer.io is UP

and responding normally

Automated messaging platform for targeted campaigns.

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Save it as a Vartio monitor and get alerts when our EU checks detect downtime or degraded response.

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Response Time History

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Uptime
100%
Excellent
Response
54ms
Last check
Checks
16,075
30-day total
Last Check
May 25, 2026, 4:02 PM
Every 5 min

About Customer.io

Category
Marketing
Monitored from
EU (Helsinki, Frankfurt, Amsterdam)
Check interval
Every 5 minutes

Frequently Asked Questions

Is Customer.io down right now?

Customer.io is currently up and running. Our last check from EU servers showed a response time of 54ms with 100% uptime over the past 30 days.

What is Customer.io's uptime?

Customer.io has a 30-day uptime of 100%, based on 16,075 checks from Vartio's EU monitoring servers located in Helsinki, Frankfurt, and Amsterdam.

How do I check if Customer.io is down?

Vartio monitors Customer.io every 5 minutes from multiple EU servers and runs a live check when you visit this page. This page shows the current status, response time, and 30-day uptime history. You can also monitor your own services for free.

Why is Customer.io down?

When Customer.io is down, Vartio automatically checks the service's official status page for reported incidents and outage reasons. Common causes include server maintenance, infrastructure issues, DNS problems, or DDoS attacks. Visit this page for real-time updates.

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Is Customer.io Down? — Up and Running | Vartio | Vartio