Push Notification Services · reliability comparison
Courier vs OneSignal: which is more reliable? (2026)
Courier is more reliable than OneSignal, scoring 97.5 vs 77.2 out of 100. Over the last 90 days Courier reported 2 incidents and OneSignal reported 5, with effective uptime of 99.99% and 99.75% respectively. Courier resolves incidents faster on average (26m).
Data updated Nov 2, 2026 · How we score
| Metric | Courier | OneSignal |
|---|---|---|
| Reliability score | 97.5 | 77.2 |
| Rank (push notification services) | #3 | #9 |
| Uptime (90 days) | 99.99% | 99.75% |
| Incidents (90 days) | 2 | 5 |
| Partial / major outages | 0 | 3 |
| Avg time to resolve | 26m | 5h 34m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Courier and OneSignal differ
- OneSignal reported 2.5× as many incidents as Courier over the last 90 days (5 vs 2).
- OneSignal had 3 partial or major outages, compared with 0 for Courier.
- Courier fixes problems faster: 26m on average, against 5h 34m for OneSignal (12.9× quicker).
- Courier's longest outage on record lasted 3h 7m (Feb 2, 2026); OneSignal's lasted 2h 4m (Aug 4, 2026).
90-day uptime
Courier
OneSignal
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Courier incidents
- Degraded performanceOct 10, 2026 · resolved in 15m
Affected: API
- Degraded performanceOct 9, 2026 · resolved in 37m
Affected: API
Recent OneSignal incidents
- Degraded performanceOct 14, 2026 · resolved in 1d
Affected: Dashboard / UI, Email, Integrations, APIs & SDK Endpoints, SMS, In-App Messages +2 more
- Degraded performanceSep 30, 2026 · resolved in 24m
Database incident - impacting app IDs starting with e
Affected: Dashboard / UI, APIs & SDK Endpoints
- Partial outageSep 22, 2026 · resolved in 26m
Subscription API - Creation Failures
Affected: APIs & SDK Endpoints
- Partial outageSep 18, 2026 · resolved in 34m
Intermittent errors on /api/v1/notifications api
Affected: APIs & SDK Endpoints
- Partial outageAug 4, 2026 · resolved in 2h 4m
Apple push notifications failing in about 3% of casesofficial update ↗
Affected: Push
Other push notification services to consider
- Novu · #1 · 100% uptime
- Pushwoosh · #2 · 99.99% uptime
- Expo Push Notifications · #4 · 99.93% uptime
- Firebase Cloud Messaging · #5 · 99.91% uptime
See the full most reliable push notification services ranking →