OneSignal experienced a minor incident on May 22, 2026 affecting Push and Email and 1 more component, lasting —. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating May 22, 2026, 07:37 PM UTC
Status: Investigating What’s happening: Timezone based and intelligent deliveries impacted because of backlog of messages. Who’s affected: • Any free customers using Timezone-based Delivery, Intelligent Delivery, or Retry Delivery. Current Status: We are investigating the issue and will provide an update in 30 minutes Affected components Email (Degraded performance) SMS (Degraded performance) In-App Messages (Degraded performance) Push (Degraded performance)
- identified May 22, 2026, 07:46 PM UTC
Status: Identified We've identified the root cause and are actively implementing mitigations. Affected components Email (Degraded performance) SMS (Degraded performance) In-App Messages (Degraded performance) Push (Degraded performance)
- resolved May 22, 2026, 08:23 PM UTC
Status: Resolved The necessary mitigations have been applied and all systems are now operating normally. Affected components Email (Operational) SMS (Operational) In-App Messages (Operational) Push (Operational)