Customer.io

Name: Customer.io
Brand: Customer.io
Price: 100 USD
Rating: 4.5 (818 reviews)

Unclaimed Editor reviewed

Automated messaging based on user behavior

Marketing Automation Email Push Notifications SMS Marketing

Visit Website

4.5(818 across the web)

PaidVisit Website

Reviews onG2CapterraSourceForge

818 reviews tracked

The Bottom Line

Entry price

Paid plans only

Biggest pro

Powerful messaging platform

Biggest con

Expensive

TL;DR - Customer.io

Customer.io is a marketing automation platform for sending targeted emails and push notifications
It triggers messages based on user behavior with powerful segmentation and workflow builders
Plans start at $100/month for up to 5,000 profiles

Pricing: Paid only

Best for: Enterprises & pros

4.5/5 across review platforms

What is Customer.io?

Editorial review

Customer.io is a customer engagement platform for sending data-powered communications through email, SMS, push notifications, and in-app messaging with visual workflow automation.

Available on: Web

LCLouis CorneloupUpdated May 26, 2026 · how we evaluateSourcecustomer.io ↗

Pros & Cons

Pros

Powerful messaging platform
Multi-channel
Developer friendly
Good segmentation
Real-time data

Cons

Expensive
Complex for simple needs
Learning curve
UI can be confusing
Requires technical knowledge

Ratings Across the Web

4.5(818 reviews)

Ratings aggregated from independent review platforms. Learn more

Key Features

Email automationSMS messagingPush notificationsIn-app messagesVisual workflow builderBehavioral segmentationA/B testingHIPAA compliance

Pricing Plans

Free Trial

Essentials

$100

5,000 profiles
1M monthly emails
Visual workflow builder
A/B testing

Premium

$1,000

Custom volume
Premium support
90-day onboarding
HIPAA compliance option

Enterprise

Custom

Best pricing
Dedicated CSM
Migration support
Dedicated hardware

Calculate your cost View full pricing

How Customer.io's pricing compares

At $100/mo, Customer.io is the most premium of its 4 direct competitors.

$15

$15

$20

$49

Customer.io

$100

Entry paid plan, monthly.

Reviews

4.5/5

Across 818 verified user reviews on G2, Capterra, SourceForge

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Best Customer.io Alternatives

Top alternatives based on features, pricing, and user needs.

View full list →

HubSpotFreemium

CRM platform for scaling businesses

4.2

MailchimpFreemium

Grow your business with email, SMS, and AI marketing

4.4

ActiveCampaignPaid

Email marketing, automation & CRM

4.5

KlaviyoFreemium

Email marketing for e-commerce

4.6

AttentivePaid

Personalized SMS & email marketing at scale

4.7

ManyChatFreemium

Automate customer conversations across Instagram, Messenger, WhatsApp, SMS, and email

4.5

See all Marketing Automation tools →

Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

All Customer.io alternatives6+ tools ranked, pricing + verdict per pick Customer.io vs HubSpotHead-to-head: features, pricing, who wins Customer.io vs MailchimpHead-to-head: features, pricing, who wins Customer.io vs ActiveCampaignHead-to-head: features, pricing, who wins

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Customer.io FAQ

What is Customer.io?

Customer.io is a customer engagement platform that enables businesses to send automated, personalized messages via email, SMS, push notifications, and in-app messaging based on user behavior.

How much does Customer.io cost?

Customer.io Essentials starts at $100/month for 5,000 profiles and 1M emails. Premium starts at $1,000/month (annual) with custom volumes. Enterprise has custom pricing.

Is Customer.io HIPAA compliant?

Yes, HIPAA compliance is available on the Premium tier and above for healthcare organizations that need to send compliant patient communications.

What is Customer.io object-based messaging?

Objects let you associate data beyond people (like orders, subscriptions, accounts) with profiles. Essentials includes 2 object types; Premium includes 10.

Source: customer.io

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