SMS & Voice APIs · reliability comparison
AWS End User Messaging vs SignalWire: which is more reliable? (2026)
AWS End User Messaging is more reliable than SignalWire, scoring 100.0 vs 92.1 out of 100. Over the last 90 days AWS End User Messaging reported 0 incidents and SignalWire reported 3, with effective uptime of 100% and 99.94% respectively.
Data updated Nov 1, 2026 · How we score
VS
| Metric | AWS End User Messaging | SignalWire |
|---|---|---|
| Reliability score | 100.0 | 92.1 |
| Rank (SMS & voice APIs) | — | #2 |
| Uptime (90 days) | 100% | 99.94% |
| Incidents (90 days) | 0 | 3 |
| Partial / major outages | 0 | 3 |
| Avg time to resolve | — | 47m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where AWS End User Messaging and SignalWire differ
- AWS End User Messaging reported no incidents in the last 90 days, while SignalWire reported 3.
- SignalWire had 3 partial or major outages, compared with 0 for AWS End User Messaging.
90-day uptime
AWS End User Messaging
SignalWire
- 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 SignalWire incidents
- Partial outageOct 23, 2026 · resolved in 10m
Dashboard analytics unavailable
Affected: Website
- Partial outageOct 5, 2026 · resolved in 14m
Resolved: underlying infrastructure issue resulted in an interruption to all services.
Affected: AI, APIs, MMS, SIP Connectivity, SMS, Video and Conferencing +1 more
- Partial outageAug 14, 2026 · resolved in 1h 59m
Degraded: outbound calls and fax
Affected: APIs
Other SMS & voice APIs to consider
- Plivo · #1 · 100% uptime
- Telesign · #3 · 99.91% uptime
- Textmagic · #4 · 99.82% uptime
- Africa's Talking · #5 · 99.80% uptime