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Email Marketing

Customer.io vs Sender: Pricing Comparison 2026

Side-by-side pricing comparison of Customer.io and Sender. See all plans, features, and costs at a glance.

Bottom line: Sender starts at $7/mo, making it $93/mo cheaper than Customer.io ($100/mo). Sender offers a free plan.

Last updated: July 6, 2026

Data compiled by Arthur Jacquemin
Updated July 6, 2026
Try Customer.io freeTry Sender freePrice updated 11d agoPrice updated 11d ago
Best Value

Sender - Sender offers a free plan, starts at $93/mo lower ($7/mo vs $100/mo), offers 4 tiers vs 3.

Customer.io vs Sender: Quick Pricing Facts

FeatureCustomer.ioSender
Starting Price$100/mo$7/mo
Number of Plans34
Free TierNoYes
Pricing Modelusage-basedfreemium
Annual DiscountN/AN/A

Sender is the more affordable option, starting at $7/mo compared to Customer.io's $100/mo. Both are Email Marketing tools with 7 combined pricing plans and 38 features compared.

Sender stands out with a free plan for getting started. Customer.io uses usage-based pricing while Sender uses freemium pricing, which may affect your total cost at scale.

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
Customer.io
Try free
Sender
Sender
Try free
Tier 1
Essentials
$100/month
Start with Essentials
Free Forever!
$0/monthCheapest
Includes
  • 1 seat
  • Up to 2 500 subscribers
  • Up to 15 000 emails/month
  • emails/
  • month
  • Contains Sender branding
  • Email newsletters
  • Email automation
  • Landing pages
  • Signup forms & popups
  • Transactional emails
Start with Free Forever!
Tier 2
Premium
$1000/month
Start with Premium
Standard
$7/monthCheapest
Includes
  • Up to 12k emails/month
  • month
  • Up to 1k subscribers
  • 3 Role-based seats
  • No Sender branding
  • SMS messaging
  • Unlimited email & popup templates
  • Unlimited landing pages
  • A/B testing & experiments
Start with Standard
Tier 3
Enterprise
Custom pricing
Start with Enterprise
ProfessionalPopular
$1430/monthCheapest
Includes
  • Up to 24k emails/month
  • month
  • Up to 1k subscribers
  • 10 role-based seats
  • Free SMS
  • ($14/month)
  • Unlimited email editor features
  • Advanced automation
  • Advanced reports
  • Priority support
  • Dedicated IPs available
Start with Professional
Tier 4
-
Enterprise
Custom pricing
Includes
  • Unlimited emails
  • Dedicated success manager
  • Advanced user permissions
  • Service level agreement
  • Activity logs for auditing
  • SSO (SAML v2)
  • Phone support
Start with Enterprise

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Customer.io

Automated messaging platform for targeted customer engagement

View all Customer.io plans

Sender

Affordable email and SMS marketing for ecommerce

View all Sender plans

Frequently Asked Questions: Customer.io vs Sender

Which is cheaper, Customer.io or Sender?
As of July 2026, Sender starts at a lower price point. Customer.io starts at $100/mo while Sender starts at $7/mo. However, the best value depends on the features you need at each tier.
How many pricing plans does Customer.io have vs Sender?
Customer.io offers 3 pricing plans, while Sender offers 4 plans. More plans typically means more flexibility to match your exact needs and budget.
Does Customer.io or Sender offer a free plan?
Sender offers a free plan, while Customer.io does not. If budget is a concern, Sender lets you get started at no cost.
What is the most popular Sender plan?
The Professional plan is Sender's most popular tier, priced at $1430/mo. Key features include Up to 24k emails/month, month, Up to 1k subscribers.
Does Customer.io or Sender offer custom enterprise pricing?
Yes, both Customer.io and Sender offer custom enterprise pricing tiers with quote-based pricing. Contact each vendor for a tailored quote.
What pricing models do Customer.io and Sender use?
Customer.io uses a usage-based pricing model, while Sender uses freemium pricing. The right model depends on your team size and usage patterns.
How do Customer.io and Sender compare for Email Marketing?
Both Customer.io and Sender are Email Marketing tools. Customer.io offers 3 plans starting at $100/mo, while Sender offers 4 plans starting at $7/mo. Review the feature breakdowns above to see which better fits your Email Marketing needs.
AI Recommendations

Sources

  1. Customer.io Official Pricing- Vendor pricing page
  2. Sender Official Pricing- Vendor pricing page

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