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Is Customer.io Down? — CheckUpstream

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Customer.io.

OperationalLive

No — Customer.io is up.

1 day since last incident

30-day uptime

100.000%

30 days agotoday

Recent incidents (30d)

Delays processing send events in some environments
Minor
7/10/2026, 5:28:07 PM · resolved 7/10/2026, 6:10:32 PM · lasted 42m
User Interface is currently unavailable for some users in EU. Data processing delays
Minor
7/3/2026, 9:07:09 AM · resolved 7/3/2026, 11:10:18 AM · lasted 2h 3m
User Interface is currently unavailable, data processing delays
Minor
7/2/2026, 1:51:49 PM · resolved 7/2/2026, 2:25:19 PM · lasted 33m
Some customers are currently unable to access the account Billing page in our UI
Minor
6/18/2026, 8:06:00 PM · resolved 6/18/2026, 8:35:26 PM · lasted 29m

Official status page: https://status.customerio.com (opens in new tab)

Want history, per-window uptime, MTTR, and community signal data? See the Customer.io reliability page.

Investigating Connectivity Issues

6/13/2026, 9:18:35 PM · resolved 6/14/2026, 12:00:58 AM · lasted 2h 42m