CheckUpstream has measured Customer.io at 100.000% uptime over the last 90 days and 99.977% over the last 12 months. 24 incidents were recorded in the past 12 months; the most recent resolved 4 days ago after 2 hours. Status signals are polled from Customer.io's official Atlassian Statuspage status page, alongside independent probes and community reports.
180 days uptime
99.953%
178 of 180 days clean · 2h total downtime
Downtime like this can be refundable
If you're a paying Customer.io customer, outages in these windows may count against Customer.io's SLA — vendors owe service credits for missed uptime targets, but only if you file inside the deadline. CheckUpstream tracks the entitlement, drafts the claim, and hands you the filing link.
Track your Customer.io entitlement →Jul 23, 08:27 UTC · resolved in 1h 37m · Resolved
Jul 20, 22:02 UTC · resolved in 1h 2m · Resolved
Jul 20, 17:07 UTC · resolved in 43m · Resolved
Live status pill for Customer.io. Updates automatically — no maintenance, no API key.
PREVIEW
Drop into any HTML page — README, docs, vendor homepage. No iframe, no dependencies.
<script src="https://checkupstream.com/embed/badge.js?service=customer-io"></script>Self-contained, CSP-friendly. Theme + size are query params; revalidates every 60s.
<iframe src="https://checkupstream.com/embed/customer-io" style="border:0;width:260px;height:44px" loading="lazy" title="Customer.io status badge"></iframe>GitHub READMEs, GitLab, MDX docs — links to the live reliability page.
[](https://checkupstream.com/reliability/customer-io)Useful for status-page composers (Notion, Slab, custom dashboards) that accept image URLs.
https://checkupstream.com/embed/customer-io/badge.svgCustomer.io is currently Operational. CheckUpstream tracks Customer.io in real-time across the official status page, RSS / Atom feeds, and community telemetry — refresh this page for the latest reading.
Looking for the live "is Customer.io down" view? See the Customer.io Status page.
Jul 15, 17:19 UTC · resolved in 2h 35m · Resolved
Jun 9, 15:49 UTC · resolved in 1h 12m · Resolved
Jun 5, 12:57 UTC · resolved in 52m · Resolved
Jun 4, 23:50 UTC · resolved in 1h 29m · Resolved
Jun 4, 13:34 UTC · resolved in 10m · Resolved
Jun 2, 21:18 UTC · resolved in 1h 43m · Resolved
Jun 1, 11:40 UTC · resolved in 40m · Resolved
May 29, 16:26 UTC · resolved in 43m · Resolved
May 25, 15:27 UTC · resolved in 52m · Resolved
May 6, 16:00 UTC · resolved in 31m · Resolved
Apr 20, 19:52 UTC · resolved in 18m · Resolved
Customer.io's last resolved incident started 4 days ago and lasted 1h 37m (degraded performance).
Customer.io's 30-day customer-perceived uptime is 99.953%. The figure is weighted (full-outage = 1.0, degraded = 0.3) so component blips don't collapse the score the way a raw incident-count would.
Sign up to CheckUpstream and add Customer.io to a watchlist. We send incident alerts via Slack, email, webhook, or PagerDuty within seconds of detection — covering both the official status page and community signals (HN, Reddit, Bluesky, Cloudflare Radar).
We poll Customer.io's official status page on a 1-5 minute cadence, parse its RSS / Atom feed as a fallback, ingest community signals from social platforms, and aggregate per-org SDK telemetry. Multiple sources reduce false positives versus any single feed alone.