Constant Contact
vs
Customer.io

Constant Contact vs Customer.io: Full Comparison 2025

Which is right for your team? Compare pricing, features, and more.

Constant Contact

Email marketing platform for small businesses

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Customer.io

Behavioral messaging automation for product teams

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Constant Contact vs Customer.io: Feature Comparison

Feature
C Constant Contact logo
Constant Contact
C Customer.io logo
Customer.io
Pricing From $12/mo From $100/mo
Founded 1995 2012

About Constant Contact

Constant Contact is one of the oldest and most widely used email marketing platforms, serving over 600,000 small businesses. It offers a beginner-friendly drag-and-drop editor, contact management, event marketing tools, and social media integration — with strong customer support and a large library of email templates.

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About Customer.io

Customer.io is a marketing automation platform that enables product and growth teams to send highly targeted emails, push notifications, and SMS based on real-time user behavior. Its visual workflow builder and rich segmentation engine make it ideal for SaaS companies building lifecycle and onboarding campaigns.

Visit Customer.io ↗

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