Marketing Automation & CDPs · reliability comparison
Customer.io vs HubSpot Marketing Hub: which is more reliable? (2026)
Customer.io and HubSpot Marketing Hub are effectively tied on reliability (96.2 vs 96.2). Over the last 90 days Customer.io reported 5 incidents and HubSpot Marketing Hub reported 10, with effective uptime of 99.99% and 100% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Customer.io | HubSpot Marketing Hub |
|---|---|---|
| Reliability score | 96.2 | 96.2 |
| Rank (marketing automation platforms) | #2 | #1 |
| Uptime (90 days) | 99.99% | 100% |
| Incidents (90 days) | 5 | 10 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | 19m | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Customer.io and HubSpot Marketing Hub differ
- HubSpot Marketing Hub reported 2× as many incidents as Customer.io over the last 90 days (10 vs 5).
- Customer.io's longest outage on record lasted 2h 42m (Jun 13, 2026); HubSpot Marketing Hub's lasted 3d (Jul 14, 2026).
90-day uptime
Customer.io
HubSpot Marketing Hub
- 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 HubSpot Marketing Hub incidents
- InformationalOct 23, 2026 · resolved in 2h 47m
Some HubSpot tools may be unavailable for some users
Affected: CRM, Marketing Tools, Website, Sales Tools, Service Tools, Chat & Automation +5 more
- InformationalOct 22, 2026 · resolved in 1h 53m
- InformationalOct 8, 2026 · resolved in 1h 35m
Marketing email statistics are delayed
Affected: Marketing Tools, Reports
- InformationalOct 2, 2026 · resolved in 1h 53m
HubSpot is experiencing issues
Affected: CRM, Marketing Tools, Chat & Automation
- InformationalSep 23, 2026 · resolved in 13m
- InformationalSep 8, 2026 · resolved in 59m
Other marketing automation platforms to consider
- Iterable · #3 · 99.96% uptime
- RudderStack · #4 · 99.94% uptime
- Hightouch · #5 · 99.92% uptime
- Optimove · #6 · 99.88% uptime
See the full most reliable marketing automation & customer data platforms ranking →