Customer.io outage history

25 incidents from the official Customer.io status page, the oldest from 6 May 2026.

Is Customer.io down right now?

September 2026 3

  1. , resolved after 27 min

    Some US customers may experience delays in message sending

    Impact: minor

  2. , resolved after 1 h 19 min

    Reduced Deliverability to Microsoft-Hosted Email Addresses

  3. , resolved after 5 min

    Investigating issues with the Agent

    Impact: minor

August 2026 2

  1. , resolved after 26 min

    Customer.io UI is inaccessible

  2. , resolved after 33 min

    Delays in processing and UI inaccessible for some customers in the US datacentre

    Impact: minor

July 2026 8

  1. , resolved after 15 min

    Issues accessing EU accounts

    Impact: major

  2. , resolved after 1 h 37 min

    Some EU users are experiencing delays in processing

    Impact: minor

  3. , resolved after 1 h 22 min

    Some customers are experiencing data processing and message-sending delays

    Impact: minor

  4. , resolved after 40 min

    Delays in message sending

    Impact: major

  5. , resolved after 2 h 26 min

    Some customers are experiencing data processing delays

    Impact: minor

  6. , resolved after 41 min

    Delays processing send events in some environments

  7. , resolved after 2 h 2 min

    User Interface is currently unavailable for some users in EU. Data processing delays

    Impact: minor

  8. , resolved after 25 min

    User Interface is currently unavailable, data processing delays

    Impact: minor

June 2026 9

  1. , resolved after 28 min

    Some customers are currently unable to access the account Billing page in our UI

    Impact: minor

  2. , resolved after 2 h 41 min

    Investigating Connectivity Issues

    Impact: major

  3. , resolved after 32 min

    Delays in processing requests

    Impact: minor

  4. , resolved after 1 h 7 min

    AI Agent and LLM Campaign Actions Disruption

  5. , resolved after 1 h 4 min

    Some customers seeing delays setting up Pipelines in new EU workspaces

    Impact: minor

  6. , resolved after 1 h 25 min

    Salesforce and Hubspot syncs might be delayed for some EU customers

    Impact: minor

  7. , resolved after 8 min

    Customer.io UI is currently inaccessible

    Impact: minor

  8. , resolved after 1 h 39 min

    UI inaccessible

    Impact: major

  9. , resolved after 31 min

    Reverse ETL Syncs not being run for some EU Customers

    Impact: minor

May 2026 3

  1. , resolved after 42 min

    Some customers are seeing broadcast delivery delays (emails, push notifications, and webhooks)

    Impact: minor

  2. , resolved after 43 min

    Customers in the EU region may experience delays in message sending

    Impact: minor

  3. , resolved after 26 min

    Some customers in our EU region may experience errors and delays

    Impact: minor