Marketing Automation & CDPs · reliability comparison
Customer.io vs Salesforce Marketing Cloud: which is more reliable? (2026)
Customer.io is more reliable than Salesforce Marketing Cloud, scoring 96.2 vs 45.9 out of 100. Over the last 90 days Customer.io reported 5 incidents and Salesforce Marketing Cloud reported 5, with effective uptime of 99.99% and 98.76% respectively. Customer.io resolves incidents faster on average (19m).
Data updated Nov 2, 2026 · How we score
| Metric | Customer.io | Salesforce Marketing Cloud |
|---|---|---|
| Reliability score | 96.2 | 45.9 |
| Rank (marketing automation platforms) | #1 | #13 |
| Uptime (90 days) | 99.99% | 98.76% |
| Incidents (90 days) | 5 | 5 |
| Partial / major outages | 0 | 1 |
| Avg time to resolve | 19m | 19h 46m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Customer.io and Salesforce Marketing Cloud differ
- Salesforce Marketing Cloud had 1 partial or major outage, compared with 0 for Customer.io.
- Customer.io fixes problems faster: 19m on average, against 19h 46m for Salesforce Marketing Cloud (62.7× quicker).
- Customer.io's longest outage on record lasted 2h 42m (Jun 13, 2026); Salesforce Marketing Cloud's lasted 37m (Oct 20, 2026).
90-day uptime
Customer.io
Salesforce Marketing Cloud
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Customer.io incidents
- Degraded performanceOct 27, 2026 · resolved in 25m
Customer.io UI is currently unavailable for some customers
Affected: Management Interface
- Degraded performanceSep 19, 2026 · resolved in 27m
Some US customers may experience delays in message sending
Affected: Message Sending
- InformationalSep 4, 2026 · resolved in 1h 19m
Reduced Deliverability to Microsoft-Hosted Email Addresses
Affected: Message Sending
- Degraded performanceSep 3, 2026 · resolved in 5m
- InformationalAug 5, 2026 · resolved in 26m
Customer.io UI is inaccessible
Affected: Management Interface
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 · #2 · 100% uptime
- Iterable · #3 · 99.96% uptime
- RudderStack · #4 · 99.94% uptime
- Hightouch · #5 · 99.92% uptime
See the full most reliable marketing automation & customer data platforms ranking →