OneSignal incident: Message Delivery - Delayed inteligent/timezone notification deliveries

1. resolvedJun 17, 2026, 06:55 UTC

   We have applied a mitigation that resolves the impact. We are monitoring to confirm effectiveness. Intelligent/timezone notifications were delayed for 45m. **No** regular direct notifications were impacted.

2. identifiedJun 17, 2026, 06:38 UTC

   We have identified the root cause and are working towards a resolution. We will provide another update in 15 minutes

3. investigatingJun 17, 2026, 06:24 UTC

   **What’s happening:** Delivery of inteligent/timezone notifications will be delayed, we’re investigating the situation **Who’s affected:** • All customers _may_ be affected **Current Status:** We are investigating the issue and will provide an update in 10 minutes

What APIStatus.watch saw

Our 5-minute checks didn't record a change in OneSignal's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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How often does OneSignal have incidents?

OneSignal reported 9 incidents in the last 90 days, 3 of them major or critical. A typical incident lasted 1h 29m. See OneSignal's uptime and incident history