Email Marketing Platforms · reliability comparison
beehiiv vs Klaviyo: which is more reliable? (2026)
beehiiv is more reliable than Klaviyo, scoring 88.6 vs 62.2 out of 100. Over the last 90 days beehiiv reported 1 incident and Klaviyo reported 13, with effective uptime of 99.90% and 99.26% respectively. Klaviyo resolves incidents faster on average (3h 39m).
Data updated Nov 1, 2026 · How we score
| Metric | beehiiv | Klaviyo |
|---|---|---|
| Reliability score | 88.6 | 62.2 |
| Rank (email marketing platforms) | #9 | #11 |
| Uptime (90 days) | 99.90% | 99.26% |
| Incidents (90 days) | 1 | 13 |
| Partial / major outages | 1 | 5 |
| Avg time to resolve | 4h 13m | 3h 39m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where beehiiv and Klaviyo differ
- Klaviyo reported 13× as many incidents as beehiiv over the last 90 days (13 vs 1).
- Klaviyo had 5 partial or major outages, compared with 1 for beehiiv.
- Klaviyo fixes problems faster: 3h 39m on average, against 4h 13m for beehiiv.
- beehiiv's longest outage on record lasted 4h 19m (Nov 18, 2025); Klaviyo's lasted 2d 1h (May 5, 2026).
90-day uptime
beehiiv
Klaviyo
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent beehiiv incidents
- Partial outageAug 21, 2026 · resolved in 4h 13m
Some newsletters are experiencing incomplete post sendsofficial update ↗
Affected: Sending emails, SendGrid API v3
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
Other email marketing platforms to consider
- Drip · #1 · 100% uptime
- MailerLite · #2 · 100% uptime
- Omnisend · #3 · 100% uptime
- AWeber · #4 · 100% uptime
See the full most reliable email marketing platforms ranking →