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Email Marketing

Customer.io vs Litmus: Pricing Comparison 2026

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

Bottom line: Customer.io starts at $100/mo and Litmus starts at Custom pricing. Compare all 8 pricing tiers side by side.

Last updated: March 16, 2026

Data compiled by Arthur Jacquemin
Updated March 16, 2026
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Customer.io vs Litmus: Quick Pricing Facts

FeatureCustomer.ioLitmus
Starting Price$100/moCustom pricing
Number of Plans35
Free TierNoNo
Pricing Modelusage-basedper-seat
Annual DiscountN/AN/A

Customer.io and Litmus are both priced at $100/mo, making them equally accessible Email Marketing tools. Together they offer 8 pricing plans with 30 features compared, so the best choice comes down to which features match your needs.

Customer.io uses usage-based pricing while Litmus uses per-seat 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 it free
Litmus
Tier 1
Essentials
$100/monthCheapest
Start with Essentials
Deliverability upgrade
Custom pricing
Includes
  • Inbox placement insights by mailbox provider
  • 24/7 reputation and deliverability monitoring
  • Deep engagement analytics filtered by platform, location, and mailbox provider
  • Easy tracking of SPF, DKIM, and DMARC results
  • Customizable alerts to react to reputation problems before they impact performance
  • Configurable dashboards to view deliverability and engagement data in one spot
  • Includes access to Everest
Start with Deliverability upgrade
Tier 2
Premium
$1000/monthCheapest
Start with Premium
Sender Certification upgrade
Custom pricing
Includes
  • 24/7 monitoring of your email sending infrastructure backed by a dedicated compliance team
  • Placement on a trusted allow-list for improved inbox placement and fewer filtering issues
  • Built-in threat protection for high-risk sends and mandated mailing
  • Exclusive data feeds from mailbox providers and security companies
  • Daily and monthly performance reporting delivered to your inbox
Start with Sender Certification upgrade
Tier 3
Enterprise
Custom pricing
Start with Enterprise
Competitive Intel upgrade
Custom pricing
Includes
  • See when competitors show up in the inbox with visibility into their send volume and frequency
  • Optimize subject lines with confidence by understanding what competitors are using
  • Make smarter strategic decisions using objective insight into what’s working and what’s not across your competitive landscape
  • Get insights into the email practices of best-in-class senders
Start with Competitive Intel upgrade
Tier 4
—
Email Guardian upgrade
Custom pricing
Includes
  • Notifications for client changes, broken links, or image issues to protect subscriber experience and brand reputation
  • 24/7 monitoring for automated sends and frequently used email templates
  • Peace of mind knowing your most important emails are constantly protected and ready to drive revenue
Start with Email Guardian upgrade
Tier 5
—
Litmus Enterprise
Custom pricing
Includes
  • Unlimited seats and usage!
  • Automated QA checks and previews on 100+ email clients and devices
  • Easy-to-use email builder–with or without code
  • Personalization templates for custom images, countdown timers, and more
  • Customizable email testing profiles
  • Code editor integrations to test where you build
  • All-in-one collaboration and review hub
  • More Personalize features like custom scratch-offs and rule-based images
  • Enterprise-level ESP integrations
  • Advanced security settings and user permissions
  • Unique email analytics and insights you won’t find in your ESP alone
Start with Litmus Enterprise

Swipe to compare plans →

Customer.io

Automated messaging platform for targeted customer engagement

View all Customer.io plans

Litmus

Email testing, analytics, and collaboration for email teams

View all Litmus plans
Our Pick

Litmus

Litmus offers 5 tiers vs 3.

Based on pricing data only. Review the full comparison below for your specific needs.

Best value: Litmus

Try Litmus free

Which 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 Litmus if:

  • •You need 5 pricing tiers for flexible team sizing—more options mean less overpaying for features you don't need
  • •You want more features built-in—Litmus offers 30 additional features across its plans
  • •You prioritize Litmus's user experience and interface over price (both tools are similarly priced)

Customer.io and Litmus offer competitively positioned plans [1], with Customer.io starting at $100/mo and Litmus at Custom pricing. This pricing similarity means value differentiation comes down to feature alignment rather than cost. Customer.io provides 3 pricing tiers versus Litmus' 5 options, which affects your flexibility and cost-per-tier efficiency as your team scales and usage increases. Feature-wise, Customer.io offers 0 total features across its tiers, while Litmus provides 30. Map your required features to each tier to determine which tool delivers the capabilities you need at your target price point. 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.

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Frequently Asked Questions: Customer.io vs Litmus

How many pricing plans does Customer.io have vs Litmus?
Customer.io offers 3 pricing plans, while Litmus offers 5 plans. More plans typically means more flexibility to match your exact needs and budget.
Does Customer.io or Litmus offer custom enterprise pricing?
Yes, both Customer.io and Litmus offer custom enterprise pricing tiers with quote-based pricing. Contact each vendor for a tailored quote.
What pricing models do Customer.io and Litmus use?
Customer.io uses a usage-based pricing model, while Litmus uses per-seat pricing. The right model depends on your team size and usage patterns.
How do Customer.io and Litmus compare for Email Marketing?
Both Customer.io and Litmus are Email Marketing tools. Customer.io offers 3 plans starting at $100/mo, while Litmus offers 5 plans starting at Custom pricing. Review the feature breakdowns above to see which better fits your Email Marketing needs.

Sources

  1. Customer.io Official Pricing— Vendor pricing page
  2. Litmus Official Pricing— Vendor pricing page

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