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98.2%of 57 verified observed days had no reported provider issue
90-Day Trend
Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.
Monthly Status Summary
Month
Issue-free days
Days Tracked
Days with issues
September 2026
96.7%
30
1
This percentage summarizes normalized provider-status observations by calendar day. It is not duration-based, component-weighted, or contractual uptime. See the methodology and limitations.
Recorded Daily Status (Last 91 Days)
Jul 22Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data
Incident History
September 2026
Some customers may experience delays in message sending
Our team has found an issue causing degraded experiences for interactions with the Agent within customer.io. We are working on a fix now.
Legacy Incident Archive
28 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.
June 2026
Some customers are currently unable to access the account Billing page in our UI
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
We've identified the issue and access to the Billing page has been restored. We thank you for your patience!
investigating
We're looking into an issue where https://fly.customer.io/settings/billing/ isn't loading for some customers. We apologize for the inconvenience.
Investigating Connectivity Issues
majorSource not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been implemented and the systems are recovering.
We are monitoring UI for any other issue.
identified
The team has identified the issue and is actively working on a fix
investigating
We are aware of an issue affecting access to our web application. Customers may encounter ERR_CONNECTION_REFUSED when attempting to access the UI.
At this time, we are not aware of any impact beyond UI accessibility. Message processing and delivery continue to operate normally.
Our team is actively investigating the issue and working to restore full service as quickly as possible.
We will provide updates as more information becomes available.
Delays in processing requests
minorSource not attested
Last archived state: resolved
View archived record details
investigating
Identified the issue, still processing backlog
investigating
Our team is aware of an issue affecting Customer IO EU and US systems . We are looking into this and gathering more details.
AI Agent and LLM Campaign Actions Disruption
Source not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been implemented and we are monitoring the results.
identified
Our engineers have identified the issue that is causing disruption. We are working on a resolution and will provide an update shortly. Thank you for your patience.
investigating
We are currently investigating an issue affecting our AI Agent and LLM actions within campaigns. Some customers may be experiencing disruption or delays with these features. We will provide an update as soon as we have more information. Thank you for your patience!
Some customers seeing delays setting up Pipelines in new EU workspaces
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been implemented and we are monitoring the results.
investigating
We are currently investigating a delay affecting the setup of Pipelines in newly created workspaces in our EU region. Customers creating new workspaces may experience longer than expected wait times before Pipelines become available.
Our team is actively working on this and we will post another update shortly. Thank you for your patience.
Salesforce and Hubspot syncs might be delayed for some EU customers
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
We have rolled out a fix and we're monitoring closely.
identified
We've identified an issue affecting some EU customers' Salesforce and Hubspot syncs. Our team is working on a fix.
Customer.io UI is currently inaccessible
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
We've got a fix in place, and the UI is available once again. Thank you for your patience!
investigating
Our team is aware of this issue and are digging into it right now. We apologize for the inconvenience and will be back with an update as soon as possible.
UI inaccessible
majorSource not attested
Last archived state: resolved
View archived record details
monitoring
We have rolled out a fix for the remaining UI-related issues and are watching system behavior closely.
identified
Our team has identified additional UI-related issues affecting some customers. We are working on a fix now.
monitoring
A fix has been deployed for the issue affecting access to the UI. We are monitoring performance and customer feedback.
investigating
Our team is aware of an issue affecting access to the Customer.io UI and we are working to identify the cause.
Reverse ETL Syncs not being run for some EU Customers
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been deployed for the issue affecting Reverse ETL syncs in EU workspaces. We are continuing to monitor this.
investigating
We are currently investigating an issue affecting Reverse ETL syncs for some EU customers.
May 2026
Some customers are seeing broadcast delivery delays (emails, push notifications, and webhooks)
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
We have a resolution in place and are monitoring message throughput recovery now. Thank you for your patience!
identified
We've identified the issue and are working towards a resolution now.
investigating
Our engineers are aware of an issue where messages may be showing as "queued". We're investigating this now. Thank you for your patience!
