SMS & Voice APIs · reliability comparison
AWS End User Messaging vs Sinch: which is more reliable? (2026)
AWS End User Messaging is more reliable than Sinch, scoring 100.0 vs 61.1 out of 100. Over the last 90 days AWS End User Messaging reported 0 incidents and Sinch reported 20, with effective uptime of 100% and 99.40% respectively.
Data updated Nov 2, 2026 · How we score
VS
| Metric | AWS End User Messaging | Sinch |
|---|---|---|
| Reliability score | 100.0 | 61.1 |
| Rank (SMS & voice APIs) | — | #8 |
| Uptime (90 days) | 100% | 99.40% |
| Incidents (90 days) | 0 | 20 |
| Partial / major outages | 0 | 3 |
| Avg time to resolve | — | 4h 51m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where AWS End User Messaging and Sinch differ
- AWS End User Messaging reported no incidents in the last 90 days, while Sinch reported 20.
- Sinch had 3 partial or major outages, compared with 0 for AWS End User Messaging.
90-day uptime
AWS End User Messaging
Sinch
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent AWS End User Messaging incidents
No incidents reported by AWS End User Messaging in the last 90 days.
Recent Sinch incidents
- MaintenanceNov 2, 2026 · resolved in 20m
- MaintenanceNov 2, 2026 · resolved (duration not published)
- MaintenanceNov 1, 2026 · resolved in 7h 30m
- MaintenanceOct 29, 2026 · resolved in 15m
- MaintenanceOct 29, 2026 · resolved in 4h
- MaintenanceOct 27, 2026 · resolved in 2h 1m
Other SMS & voice APIs to consider
- Plivo · #1 · 100% uptime
- SignalWire · #2 · 99.94% uptime
- Telesign · #3 · 99.91% uptime
- Textmagic · #4 · 99.82% uptime