Email Marketing Platforms · 2026 reliability ranking
Most Reliable Email Marketing Platforms (2026)
We ranked 15 email marketing platforms by real-world reliability over the last 90 days, using 79 status page incidents and our own around-the-clock uptime checks. An email marketing platform holds a small business's subscriber list, sign-up forms and automated flows, so an outage can stop a scheduled campaign from sending, break the welcome or abandoned-cart emails that run in the background, or leave sign-up forms collecting nothing. Delays hurt most around time-sensitive sends such as a product launch, a holiday sale or an event reminder, where a campaign that goes out hours late loses much of its value. Because the list and automations live with the vendor, switching away mid-campaign is rarely practical.
Last updated Nov 2, 2026 · How we score
| # | Vendor | Score | Uptime (90d) |
|---|---|---|---|
| 1 | DripDrip is an email and SMS marketing automation platform for ecommerce stores.Visit site ↗ | 100.0 | 100% |
| 2 | MailerLiteMailerLite is an email marketing platform for small businesses, based in Vilnius, Lithuania.Visit site ↗ | 100.0 | 100% |
| 3 | OmnisendOmnisend is an email and SMS marketing platform for ecommerce stores, headquartered in Vilnius, Lithuania.Visit site ↗ | 100.0 | 100% |
| 4 | AWeberAWeber is an email marketing platform for small businesses, based in Chalfont, Pennsylvania.Visit site ↗ | 99.6 | 100% |
| 5 | HubSpot Marketing HubHubSpot Marketing Hub is the email marketing and marketing automation product within HubSpot's CRM platform.Visit site ↗ | 96.2 | 100% |
| 6 | MoosendMoosend is an email marketing and automation platform owned by Sitecore.Visit site ↗ | 91.6 | 99.92% |
| 7 | GetResponseGetResponse is an email marketing and automation platform headquartered in Gdansk, Poland.Visit site ↗ | 90.9 | 99.94% |
| 8 | Constant ContactConstant Contact is an email marketing platform for small businesses, headquartered in Waltham, Massachusetts.Visit site ↗ | 90.6 | 99.92% |
| 9 | beehiivbeehiiv is a newsletter publishing and email marketing platform based in New York.Visit site ↗ | 88.6 | 99.90% |
| 10 | BrevoBrevo, formerly Sendinblue, is an email marketing, SMS and transactional email platform headquartered in Paris.Visit site ↗ | 70.5 | 99.68% |
| 11 | KlaviyoKlaviyo is an email and SMS marketing platform aimed at ecommerce businesses, headquartered in Boston.Visit site ↗ | 62.2 | 99.26% |
| 12 | Campaign MonitorCampaign Monitor is an email marketing platform owned by Marigold.Visit site ↗ | 59.2 | 99.50% |
| 13 | MailchimpMailchimp is an email marketing and automation platform owned by Intuit.Visit site ↗ | 55.1 | 99.28% |
| 14 | ActiveCampaignActiveCampaign is an email marketing, marketing automation and CRM platform headquartered in Chicago.Visit site ↗ | 49.1 | 98.11% |
Email Marketing Platforms reliability at a glance
- Across the 14 ranked email marketing platforms, average 90-day uptime is 99.68%. Reliability scores range from 100.0 (Drip) to 49.1 (ActiveCampaign).
- Together they published 79 incidents in the last 90 days, 21 of them partial or major outages.
- Drip, MailerLite, Omnisend reported no incidents at all in that time.
- The typical vendor takes 3h 47m to resolve an incident. Brevo is fastest, at 1h 24m on average.
- Brevo reported the most incidents (29 in 90 days).
What to check before you choose a email marketing platform
- Look at incidents affecting campaign sending, automation/flow processing and sign-up forms first. Reporting and editor outages are inconvenient; sending delays cost revenue.
- Check how the platform handles a scheduled campaign during an outage: whether it sends late, skips recipients or needs to be rescheduled by hand.
- Notice whether incidents cluster around busy periods like Black Friday, when your own sends matter most.
- Make sure your ecommerce or CRM integration keeps syncing contacts, and ask whether missed events are replayed once the outage ends.
90-day uptime history
Each bar is one day. Hover a bar for that day's uptime and incidents.
1. Drip
100% uptime · 0 incidents · avg resolve —2. MailerLite
100% uptime · 0 incidents · avg resolve —3. Omnisend
100% uptime · 0 incidents · avg resolve —4. AWeber
100% uptime · 1 incidents · avg resolve —5. HubSpot Marketing Hub
100% uptime · 10 incidents · avg resolve —6. Moosend
99.92% uptime · 2 incidents · avg resolve 1h 34m7. GetResponse
99.94% uptime · 2 incidents · avg resolve 3h 47m8. Constant Contact
99.92% uptime · 4 incidents · avg resolve 1h 41m9. beehiiv
99.90% uptime · 1 incidents · avg resolve 4h 13m10. Brevo
99.68% uptime · 29 incidents · avg resolve 1h 24m11. Klaviyo
99.26% uptime · 13 incidents · avg resolve 3h 39m12. Campaign Monitor
99.50% uptime · 1 incidents · avg resolve 3d13. Mailchimp
99.28% uptime · 7 incidents · avg resolve 1d 1h14. ActiveCampaign
98.11% uptime · 9 incidents · avg resolve 5h 36m- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Being tracked (not ranked yet)
These vendors join the ranking once we have enough evidence: at least 14 days of data, and for vendors with a quiet status page (silent for a year, or for 90 days while their competitors report several incidents), 30 days of our own independent monitoring.
- Kit (ConvertKit) · quiet status page, awaiting our own monitoring
Recent Email Marketing Platforms incidents
Campaign Sending Delaysofficial update ↗
Affected: Email Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending
Access Issues and Errors Across Mailchimp
Affected: Access Issues and Errors Across Mailchimp
Affected: Email Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending, Processing
Delayed Processing for Imports, Exports, Bulk Actions, and Campaign sending.
Affected: Campaigns
Access Issues and Errors Across Mailchimp
Affected: Access Issues and Errors Across Mailchimp
Affected: Contacts, Meetings, Transactional emails tracking links, Contact Management API, SMS Campaigns, Marketing email tracking links +4 more
Error with doubleOptinConfirmation API
Affected: Contact Management API
Some HubSpot tools may be unavailable for some users
Affected: CRM, Marketing Tools, Website, Sales Tools, Service Tools, Chat & Automation +5 more
Head-to-head comparisons
- Drip vs MailerLite reliability
- Drip vs Omnisend reliability
- Drip vs AWeber reliability
- Drip vs HubSpot Marketing Hub reliability
- MailerLite vs Omnisend reliability
- MailerLite vs AWeber reliability
- MailerLite vs HubSpot Marketing Hub reliability
- Omnisend vs AWeber reliability
- Omnisend vs HubSpot Marketing Hub reliability
- AWeber vs HubSpot Marketing Hub reliability
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Frequently asked questions
What is the most reliable email marketing platform?
Based on the last 90 days of data, Drip is the most reliable email marketing platform we track, with a reliability score of 100.0/100 and 100% uptime.
How do you measure email marketing platform reliability?
We poll each vendor's public status page every few minutes, record every incident, and run our own uptime checks against each vendor's login and customer-facing pages. Uptime (40%), incident frequency (20%), average time to resolve (20%) and transparency (20%) combine into one score out of 100.
How often are these rankings updated?
Continuously. Status pages and uptime checks run every five minutes and scores are recalculated several times an hour.
Can vendors pay to rank higher?
No. Sponsored placements are clearly labelled, shown separately from the rankings and never change a vendor's score.