Is Customer.io down today?

Check the status badge at the top of this page for the current status. Pulsetic polls the official status page every few minutes and cross-references with user reports to give you the most accurate picture.

How often does Customer.io go down?

Based on our 90-day data, we've detected 12 incidents, of which 2 were major or critical. The median resolution time is 40m.

How are outages detected?

Pulsetic polls the official status page every few minutes from multiple global locations. Crowdsourced user reports provide an additional early-warning signal, often surfacing issues before the official monitors catch them.

Is it down for everyone or just me?

The outage map and region breakdown help answer this. If reports are concentrated in one area it may be regional; if hotspots appear globally it's a widespread outage. Submit your own report to help others understand the scope.

What does "never acknowledged" mean?

"Never acknowledged" means Pulsetic detected a real service disruption, confirmed by multiple user reports, but the official status page never posted an incident for it. This is one of the core reasons teams use third-party monitoring alongside official status pages.

ALL SYSTEMS OPERATIONAL

Customer.io systems
are operational.

Pulsetic detects outages before the provider officially reports them. Monitoring since Nov 2025 · 50 incidents caught

Last checked: 4 min ago · 0 user reports (24h) · Trusted by 30,000+ teams

ALL SYSTEMS OPERATIONAL

Customer.io is up and running.

Last incident resolved 1 week ago

No active incidents at this time. Noticed something?
User Reports: Last 24 Hours
0 reports

Bars represent 20-min intervals. Occasional spikes may reflect individual issues, not widespread outages.

Outage Map
No reports yet

Reports by region (last 24h)

No reports in the last 24h

View full map →
Recent User Reports
Live

Latest 50 reports from the last 48 hours

You checked Customer.io. Who checks your website?

Pulsetic is website uptime monitoring. Add a website you own and it gets checked as often as every 30 seconds, so the next answer arrives by email.

10 monitors free, email alerts on failure and recovery. No credit card.

Start Monitoring

Top reported issues

Click an issue to upvote it and help us better indicate the service status.

Service outage 0

Degraded performance 0

Error messages 0

Timeouts / no response 0

Authentication issues 0

Network / connectivity issues 0

Feature not working 0

API errors 0

Billing or usage issues 0

Other 0

Have a different problem?
Issue breakdown
0 total votes

Distribution of reported issues over the last 24 hours.

Service outage 0%

Degraded performance 0%

Error messages 0%

Timeouts / no response 0%

Authentication issues 0%

Network / connectivity issues 0%

Feature not working 0%

API errors 0%

Billing or usage issues 0%

Other 0%

90-Day Health Summary

Total Incidents

12

Jun 20 to Sep 18, 2026
Major / Critical

2

17% of the total
Minor Incidents

10

Avg. 0.1 per day
Median Resolution

40m

P95: 2h 26m

Customer.io Response Time, ms

By Continent

Location List

From official status page

Recent Outage History

View all incidents →

Incident	Started	Duration	Impact	Status	Link
Reduced Deliverability to Microsoft-Hosted Email Addresses	Sep 4, 2026 · 12:16 PM	1h 19m	None	Resolved	Details →
Investigating issues with the Agent	Sep 3, 2026 · 5:29 PM	4m	Minor	Resolved	Details →
Customer.io UI is inaccessible	Aug 5, 2026 · 5:36 PM	26m	None	Resolved	Details →
Delays in processing and UI inaccessible for some customers in the US datacentre	Aug 3, 2026 · 7:08 AM	33m	Minor	Resolved	Details →
Issues accessing EU accounts	Jul 31, 2026 · 2:24 PM	15m	Major	Resolved	Details →
Some EU users are experiencing delays in processing	Jul 23, 2026 · 8:27 AM	1h 37m	Minor	Resolved	Details →
Some customers are experiencing data processing and message-sending delays	Jul 20, 2026 · 9:35 PM	1h 22m	Minor	Resolved	Details →
Delays in message sending	Jul 20, 2026 · 5:07 PM	40m	Major	Resolved	Details →
Some customers are experiencing data processing delays	Jul 15, 2026 · 5:19 PM	2h 26m	Minor	Resolved	Details →
Delays processing send events in some environments	Jul 10, 2026 · 5:28 PM	40m	None	Resolved	Details →

How do they compare?

Alternatives to Customer.io

Action Marketing

Marketing Automation

Online 0 incidents / 30d
Compare →
ActiveCampaign

Marketing automation

Online 2 incidents / 30d
Compare →
AdRoll

Marketing Automation

Online 0 incidents / 30d
Compare →

Teams monitoring Customer.io also watch

Other Monitored Services

Common questions

Frequently Asked Questions

Is Customer.io down today?

Check the status badge at the top of this page for the current status. Pulsetic polls the official status page every few minutes and cross-references with user reports to give you the most accurate picture.
How often does Customer.io go down?

Based on our 90-day data, we've detected 12 incidents, of which 2 were major or critical. The median resolution time is 40m.
How are outages detected?

Pulsetic polls the official status page every few minutes from multiple global locations. Crowdsourced user reports provide an additional early-warning signal, often surfacing issues before the official monitors catch them.
Is it down for everyone or just me?

The outage map and region breakdown help answer this. If reports are concentrated in one area it may be regional; if hotspots appear globally it's a widespread outage. Submit your own report to help others understand the scope.
What does "never acknowledged" mean?

"Never acknowledged" means Pulsetic detected a real service disruption, confirmed by multiple user reports, but the official status page never posted an incident for it. This is one of the core reasons teams use third-party monitoring alongside official status pages.

Get an email when Customer.io opens, updates or resolves an incident.

Add it as a dependency monitor. The Free plan includes one. See how it works
Create Free Account

Your Dashboard

No credit card needed