Marketing Automation & CDPs · reliability comparison
Klaviyo vs Twilio Segment: which is more reliable? (2026)
Klaviyo and Twilio Segment are effectively tied on reliability (62.2 vs 60.5). Over the last 90 days Klaviyo reported 13 incidents and Twilio Segment reported 10, with effective uptime of 99.26% and 99.35% respectively. Klaviyo resolves incidents faster on average (3h 39m).
Data updated Nov 1, 2026 · How we score
| Metric | Klaviyo | Twilio Segment |
|---|---|---|
| Reliability score | 62.2 | 60.5 |
| Rank (marketing automation platforms) | #11 | #12 |
| Uptime (90 days) | 99.26% | 99.35% |
| Incidents (90 days) | 13 | 10 |
| Partial / major outages | 5 | 3 |
| Avg time to resolve | 3h 39m | 8h 15m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Klaviyo and Twilio Segment differ
- Klaviyo reported 30% more incidents than Twilio Segment over the last 90 days (13 vs 10).
- Klaviyo had 5 partial or major outages, compared with 3 for Twilio Segment.
- Klaviyo fixes problems faster: 3h 39m on average, against 8h 15m for Twilio Segment (2.3× quicker).
- Klaviyo's longest outage on record lasted 2d 1h (May 5, 2026); Twilio Segment's lasted 10h 18m (Dec 16, 2025).
90-day uptime
Klaviyo
Twilio Segment
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Klaviyo incidents
- Partial outageOct 29, 2026 · resolved in 2h 10m
Affected: Email Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending
- InformationalOct 28, 2026 · resolved in 23h 43m
Affected: Email Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending, Processing
- Partial outageOct 22, 2026 · resolved in 14h 47m
Affected: Analytics
- Partial outageOct 17, 2026 · resolved in 4h 49m
Affected: Email Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending, Flow Editor, Processing
- Degraded performanceOct 9, 2026 · resolved in 2h 6m
Analytics Events Processing Delays
Affected: Segments, Profiles, Analytics
- Major outageOct 8, 2026 · resolved in 1h 13m
Affected: Klaviyo App
Recent Twilio Segment incidents
- Degraded performanceOct 26, 2026 · resolved in 16h 20m
Affected: Streaming Destinations (US), Reverse ETL (EU), Streaming Destinations (EU), Reverse ETL (US)
- Degraded performanceOct 2, 2026 · resolved in 1h 16m
Audience & Journey data delivery delay in EU region
Affected: Engage (EU), Linked Audiences (EU), Journeys (EU)
- Degraded performanceOct 1, 2026 · resolved in 8h 33m
Braze Web Event Delivery is experience event delivery issue
Affected: Streaming Destinations (US), Streaming Destinations (EU)
- Degraded performanceSep 16, 2026 · resolved in 2h 10m
Actions S3 is currently experience formatting issues with the delivered events
Affected: Streaming Destinations (US), Engage (US), Streaming Destinations (EU), Engage (EU), Profiles Sync, Journeys (US) +1 more
- Partial outageSep 10, 2026 · resolved in 1h 11m
SSO Login Issues with the Segment App
Affected: Web Interface (US)
- Partial outageSep 3, 2026 · resolved in 4h 11m
Affected: Web Interface (US), Engage (US)
Other marketing automation platforms to consider
- HubSpot Marketing Hub · #1 · 100% uptime
- Customer.io · #2 · 99.99% uptime
- Iterable · #3 · 99.96% uptime
- RudderStack · #4 · 99.94% uptime
See the full most reliable marketing automation & customer data platforms ranking →