Marketing Automation & CDPs · reliability comparison
Klaviyo vs Salesforce Marketing Cloud: which is more reliable? (2026)
Klaviyo is more reliable than Salesforce Marketing Cloud, scoring 62.2 vs 45.7 out of 100. Over the last 90 days Klaviyo reported 13 incidents and Salesforce Marketing Cloud reported 5, with effective uptime of 99.26% and 98.75% respectively. Klaviyo resolves incidents faster on average (3h 39m).
Data updated Nov 1, 2026 · How we score
| Metric | Klaviyo | Salesforce Marketing Cloud |
|---|---|---|
| Reliability score | 62.2 | 45.7 |
| Rank (marketing automation platforms) | #11 | #13 |
| Uptime (90 days) | 99.26% | 98.75% |
| Incidents (90 days) | 13 | 5 |
| Partial / major outages | 5 | 1 |
| Avg time to resolve | 3h 39m | 19h 46m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Klaviyo and Salesforce Marketing Cloud differ
- Klaviyo reported 2.6× as many incidents as Salesforce Marketing Cloud over the last 90 days (13 vs 5).
- Klaviyo had 5 partial or major outages, compared with 1 for Salesforce Marketing Cloud.
- Klaviyo fixes problems faster: 3h 39m on average, against 19h 46m for Salesforce Marketing Cloud (5.4× quicker).
- Klaviyo's longest outage on record lasted 2d 1h (May 5, 2026); Salesforce Marketing Cloud's lasted 37m (Oct 20, 2026).
90-day uptime
Klaviyo
Salesforce Marketing Cloud
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Klaviyo incidents
- Partial outageOct 29, 2026 · resolved in 2h 10m
Campaign Sending Delaysofficial update ↗
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
Outbound Webhook Delaysofficial update ↗
Affected: Analytics
- Partial outageOct 17, 2026 · resolved in 4h 49m
Flow Sending Delaysofficial update ↗
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
Login and page loading issuesofficial update ↗
Affected: Klaviyo App
Recent Salesforce Marketing Cloud incidents
- Degraded performanceOct 30, 2026 · resolved in 11h 38m
Marketing Cloud Engagement Degradation (105 instances)
Affected: MarketingCloudCoreService
- Degraded performanceOct 26, 2026 · resolved in 3h 8m
Performance Degradation (259 instances)
Affected: EmailStudio
- Partial outageOct 20, 2026 · resolved in 37m
Service Disruption (26 instances)
Affected: MarketingCloudCoreService, MarketingCloudLogin
- Degraded performanceOct 3, 2026 · resolved in 1d 17h
Marketing Cloud Engagement Feature Degradation (246 instances)
Affected: AutomationStudio
- Degraded performanceOct 3, 2026 · resolved in 1d 17h
Marketing Cloud Engagement Feature Degradation (57 instances)
Affected: AutomationStudio
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 →