Customer.io vs Mailjet: Pricing Comparison 2026
Side-by-side pricing comparison of Customer.io and Mailjet. See all plans, features, and costs at a glance.
Bottom line: Customer.io starts at $100/mo and Mailjet starts at Custom pricing. Compare all 9 pricing tiers side by side.
Last updated: March 16, 2026
Customer.io vs Mailjet: Quick Pricing Facts
| Feature | Customer.io | Mailjet |
|---|---|---|
| Starting Price | $100/mo | Custom pricing |
| Number of Plans | 3 | 6 |
| Free Tier | No | No |
| Pricing Model | usage-based | usage-based |
| Annual Discount | N/A | N/A |
Customer.io and Mailjet are both priced at $100/mo, making them equally accessible Email Marketing tools. Together they offer 9 pricing plans with 0 features compared, so the best choice comes down to which features match your needs.
Review the detailed tier-by-tier comparison above to see exactly which features are included at each price point and find the best fit for your Email Marketing needs.
| Pricing Plans |  Customer.io Try it free |  Mailjet Try it free |
|---|---|---|
| Tier 1 | Essentials $100/monthCheapest | Create Custom pricing |
| Tier 2 | Premium $1000/monthCheapest | Personalize Custom pricing |
| Tier 3 | Enterprise Custom pricing | Optimize Custom pricing |
| Tier 4 | — | Send Custom pricing |
| Tier 5 | — | Manage Custom pricing |
| Tier 6 | — | Get Support Custom pricing |
Swipe to compare plans →
Mailjet
Mailjet offers 6 tiers vs 3.
Based on pricing data only. Review the full comparison below for your specific needs.
Best value: Mailjet
Try Mailjet freeWhich Should You Choose?
Choose Customer.io if:
- •You prioritize Customer.io's user experience and interface over price (both tools are similarly priced)
- •You prefer Customer.io's usage-based model with its 3-tier structure
- •Customer.io's focused feature set keeps your team in control without tool bloat
Choose Mailjet if:
- •You need 6 pricing tiers for flexible team sizing—more options mean less overpaying for features you don't need
- •You prioritize Mailjet's user experience and interface over price (both tools are similarly priced)
- •Mailjet's usage-based pricing lets you match exact team size without tier gaps
Customer.io and Mailjet offer competitively positioned plans [1], with Customer.io starting at $100/mo and Mailjet at Custom pricing. This pricing similarity means value differentiation comes down to feature alignment rather than cost. Customer.io provides 3 pricing tiers versus Mailjet's 6 options, which affects your flexibility and cost-per-tier efficiency as your team scales and usage increases. With similar pricing, your final decision should prioritize feature requirements, integration ecosystem, and hands-on user experience testing. Request demos or activate trials with both vendors to validate long-term fit before committing to annual contracts.
Frequently Asked Questions: Customer.io vs Mailjet
How many pricing plans does Customer.io have vs Mailjet?
Does Customer.io or Mailjet offer custom enterprise pricing?
How do Customer.io and Mailjet compare for Email Marketing?
Sources
- Customer.io Official Pricing— Vendor pricing page
- Mailjet Official Pricing— Vendor pricing page
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