Head-to-head
Customer.io vs Mailjet
Two leading email marketing / automation tools, compared on pricing, features, and editorial fit. Updated for 2026.
Mailjet
Email marketing and transactional email platform with API and SMTP relay
From Free
Visit MailjetAt a glance
| Customer.io | Mailjet | |
|---|---|---|
| Tagline | Messaging that actually fits your data. | Email marketing and transactional email platform with API and SMTP relay |
| Pricing model | Paid | Freemium |
| Starts at | $100/mo | Free |
| Founded | 2012 | — |
| AI-native | ||
| Categories | Email Marketing, Automation | Email Marketing, Automation |
| Vendor claimed |
Quick take
Pick Customer.io if you need messaging that actually fits your data. Pick Mailjet if you need email marketing and transactional email platform with api and smtp relay.
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Frequently asked
- Is Customer.io better than Mailjet?
- It depends on your use case. Customer.io is messaging that actually fits your data, while Mailjet is email marketing and transactional email platform with api and smtp relay. See the comparison above for which fits your team.
- What's the price difference between Customer.io and Mailjet?
- Customer.io starts at $100/mo. Mailjet starts at Free.
- Can I migrate from Customer.io to Mailjet?
- Most tools in this category support data import via CSV. For complex migrations, both vendors offer onboarding assistance on higher-tier plans.