Constant Contact vs Customer.io: Pricing Comparison 2026
Side-by-side pricing comparison of Constant Contact and Customer.io. See all plans, features, and costs at a glance.
Bottom line: Constant Contact starts at Custom pricing and Customer.io starts at $100/mo. Compare all 7 pricing tiers side by side.
Last updated: March 16, 2026
Constant Contact vs Customer.io: Quick Pricing Facts
| Feature | Constant Contact | Customer.io |
|---|---|---|
| Starting Price | Custom pricing | $100/mo |
| Number of Plans | 4 | 3 |
| Free Tier | No | No |
| Pricing Model | usage-based | usage-based |
| Annual Discount | N/A | N/A |
Constant Contact and Customer.io are both priced at Custom pricing, making them equally accessible Email Marketing tools. Together they offer 7 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 |  Constant Contact Try it free |  Customer.io Try it free |
|---|---|---|
| Tier 1 | 30-day guarantee Custom pricing | Essentials $100/monthCheapest |
| Tier 2 | Award-winning support Custom pricing | Premium $1000/monthCheapest |
| Tier 3 | SMS Marketing Custom pricing | Enterprise Custom pricing |
| Tier 4 | Prepay and save big Custom pricing | — |
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Constant Contact
Email marketing with templates, automation, and contact management
View all Constant Contact plansWhat Reviewers Say
Constant Contact
Constant Contact
Constant Contact offers 4 tiers vs 3.
Based on pricing data only. Review the full comparison below for your specific needs.
Best value: Constant Contact
Try Constant Contact freeWhich Should You Choose?
Choose Constant Contact if:
- •You need 4 pricing tiers for flexible team sizing—more options mean less overpaying for features you don't need
- •You prioritize Constant Contact's user experience and interface over price (both tools are similarly priced)
- •You need predictable billing — Constant Contact's usage-based model avoids surprise overages
Choose Customer.io if:
- •You prioritize Customer.io's user experience and interface over price (both tools are similarly priced)
- •Customer.io's usage-based pricing lets you match exact team size without tier gaps
- •You value Customer.io's specific feature progression from free to advanced tier levels
Constant Contact and Customer.io offer competitively positioned plans [1], with Constant Contact starting at Custom pricing and Customer.io at $100/mo. This pricing similarity means value differentiation comes down to feature alignment rather than cost. Constant Contact provides 4 pricing tiers versus Customer.io's 3 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: Constant Contact vs Customer.io
How many pricing plans does Constant Contact have vs Customer.io?
Does Constant Contact or Customer.io offer custom enterprise pricing?
How do Constant Contact and Customer.io compare for Email Marketing?
Sources
- Constant Contact Official Pricing— Vendor pricing page
- Customer.io Official Pricing— Vendor pricing page
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