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Head-to-head

Customer.io vs listmonk

Two leading email marketing tools, compared on pricing, features, and editorial fit. Updated for 2026.

Customer.io logo
Customer.io

Messaging that actually fits your data.

From $100/mo
Visit Customer.io
listmonk logo
listmonk

Self-hosted newsletter and mailing list manager

From Free
Visit listmonk

At a glance

 Customer.iolistmonk
TaglineMessaging that actually fits your data.Self-hosted newsletter and mailing list manager
Pricing modelPaidFree
Starts at$100/moFree
Founded2012—
AI-native
CategoriesEmail Marketing, AutomationAnalytics, Email Marketing
Vendor claimed

Quick take

Pick Customer.io if you need messaging that actually fits your data. Pick listmonk if you need self-hosted newsletter and mailing list manager.

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Customer.io alternatives →

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listmonk alternatives →

Frequently asked

Is Customer.io better than listmonk?
It depends on your use case. Customer.io is messaging that actually fits your data, while listmonk is self-hosted newsletter and mailing list manager. See the comparison above for which fits your team.
What's the price difference between Customer.io and listmonk?
Customer.io starts at $100/mo. listmonk starts at Free.
Can I migrate from Customer.io to listmonk?
Most tools in this category support data import via CSV. For complex migrations, both vendors offer onboarding assistance on higher-tier plans.