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MailerLite vs Customer.io Comparison (2026)

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MailerLite logo

MailerLite

Customer.io logo

Customer.io

Overview

From newsletters to automated customer journeys—join 1 million businesses scaling the easy way with MailerLite. 

Customer.io is a data-driven customer engagement platform enabling businesses to create personalized journeys across channels. It features a visual workflow builder for automating messages, omnichannel support for email, SMS, push, and in-app communications, and robust data integration. Customer.io uses first-party data and AI insights to deliver targeted messaging while ensuring compliance with GDPR, HIPAA, and SOC 2 Type II standards.

  • Platforms supported
  • Web-based
  • iPhone app
  • Android app
  • Windows Phone app
  • Typical customers
  • Freelancers
  • Small businesses
  • Mid size businesses
  • Large enterprises
  • Customer support
  • Phone
  • Online
  • Knowledge base
  • Video tutorials
  • Platforms supported
  • Web-based
  • iPhone app
  • Android app
  • Windows Phone app
  • Typical customers
  • Freelancers
  • Small businesses
  • Mid size businesses
  • Large enterprises
  • Customer support
  • Phone
  • Online
  • Knowledge base
  • Video tutorials

Video & Screenshots

No videos yet

Pricing

Starting from

12

Per month

  • Free trial available
  • Credit cardless trial
  • Free account
  • Subscription based

Starting from

100

Per month

  • Free trial available
  • Credit cardless trial
  • Free account
  • Subscription based

User reviews

4.7

2.3K

5

4

3

2

1

1.8K

407

51

6

40

  • Value for money
  • Ease of use
  • Features
  • Customer support
89%
would recommend this app

4.7

87

5

4

3

2

1

63

21

2

0

1

  • Value for money
  • Ease of use
  • Features
  • Customer support
83%
would recommend this app

Pros

“It's honestly quite wild to get email newsletter system with automations with up to 100 steps, unlimited forms and segments, 10 landing pages, A/B testing, click maps, and Stripe e-commerce integrations ...on a FREE tier!”
LK

Lilli K.

Designer

“The automation builder and campaign reports are clear and practical, and the Shopify integration makes e-commerce tracking simple.”
EC

Evanthia C.

Email Marketing Specialist

“The ability to host multiple websites, landing pages, and email lists all within one platform is a huge advantage.”
MA

Mark A.

Owner

Pros

“Customer.io gives us complete control over messaging, email, SMS, push, in‑app, with smart workflows and segmentation based on real behavior.”
KS

Katie S.

Operations Manager

“We use it mainly to send newsletters, and for the automation system, sending targeted emails to our prospects.”
FM

François M.

Marketing Manager

“We have different dedicated areas on customer.io to manage the different languages.”
FM

François M.

Marketing Manager

Cons

“The automations are incredibly confusing. And the fact that once they're live, they're on a timing system, has cost me many subscribers in the shuffle of it all.”
EB

Elise B.

Only Employee - Author

“It was awkward to authenticate my domain for sending out emails, but to be fair, this is a system-wide problem no exclusive to MailerLite.”
RK

Richard K.

Book Author

“I changed the questions on the page, but the response data was not updated to reflect that change.”
JB

Julian B.

Entrepreneur

Cons

“The pricing model didn't make sense for our growing company, as you pay for all the contacts in your account, regardless of if they're active or not.”
NM

Noga M.

VP, Marketing

“It can be difficult to search for specific emails as the UI is not the most intuitive, especially for new users.”
PP

Paul P.

Head of Engineering

“Having to re-create campaign settings each time is such a time waste, for a seemingly obvious (And simple) feature.”
PF

Pedro F.

Head of Marketing

  • Vendor responds to reviews
  • Last review8 days ago
  • Vendor responds to reviews
  • Last review9 months ago

Key features

  • Total features92
  • A/B Testing
  • API
  • Access Controls/Permissions
  • Activity Dashboard
  • Activity Tracking
  • Alerts/Notifications
  • App Notifications
  • Audience Targeting
  • Autoresponders
  • Behavior Tracking
  • CAN-SPAM Compliance
  • CRM
  • Campaign Analytics
  • Campaign Management
  • Campaign Planning
  • Campaign Scheduling
  • Campaign Segmentation
  • Channel Management
  • Click Tracking
  • Compliance Management
  • Contact Database
  • Contact Management
  • Content Creation
  • Content Management
  • Conversion Tracking
  • Customer Database
  • Customer Experience Management
  • Customer History
  • Customer Journey Mapping
  • Customer Profiles
  • Customer Segmentation
  • Customer Surveys
  • Customizable Branding
  • Customizable CTAs
  • Customizable Fields
  • Customizable Forms
  • Customizable Reports
  • Customizable Templates
  • Data Capture and Transfer
  • Data Connectors
  • Data Import/Export
  • Data Integration
  • Data Security
  • Data Synchronization
  • Design Management
  • Drag & Drop
  • Drip Campaigns
  • Dynamic Content
  • Email Campaign Management
  • Email Distribution
  • Email Management
  • Email Marketing
  • Email Sequences
  • Email Templates
  • Email Tracking
  • Engagement Tracking
  • Event Triggered Actions
  • Form Builder
  • Forms Management
  • GDPR Compliance
  • Generative AI
  • Geolocation
  • Geotargeting
  • HTML Editor
  • Image Library
  • Landing Pages/Web Forms
  • Lead Capture
  • Lead Generation
  • Lead Management
  • Lead Qualification
  • List Management
  • Location Tracking
  • Mailing List Management
  • Marketing Automation
  • Mobile Access
  • Mobile App
  • Mobile Optimization
  • Monitoring
  • Multi-Campaign
  • Multi-Channel Communication
  • Multi-Channel Marketing
  • Multi-Language
  • Multiple Data Sources
  • Multivariate Testing
  • Newsletter Management
  • Notification Editor
  • Notification Scheduling
  • Personalization
  • Preview Functionality
  • Push Notifications
  • ROI Tracking
  • Real-Time Analytics
  • Real-Time Data
  • Real-Time Monitoring
  • Real-Time Notifications
  • Real-Time Reporting
  • Reporting & Statistics
  • Reporting/Analytics
  • Responsive Web Design
  • SEO Management
  • SMS Marketing
  • SMS Messaging
  • SMS Notifications
  • Sales Analytics
  • Scheduling
  • Search Marketing
  • Secure Data Storage
  • Segmentation
  • Social Marketing
  • Social Media Integration
  • Spam Blocker
  • Subscriber Management
  • Subscription Management
  • Tagging
  • Team Management
  • Template Management
  • Third-Party Integrations
  • Visual Analytics
  • Visual Workflow Management
  • WYSIWYG Editor
  • Web Forms
  • Web Notifications
  • Website Management
  • Website Publishing Options
  • Workflow Automation
  • Workflow Management
  • Total features98
  • A/B Testing
  • API
  • Access Controls/Permissions
  • Activity Dashboard
  • Activity Tracking
  • Alerts/Notifications
  • App Notifications
  • Audience Targeting
  • Autoresponders
  • Behavior Tracking
  • CAN-SPAM Compliance
  • CRM
  • Campaign Analytics
  • Campaign Management
  • Campaign Planning
  • Campaign Scheduling
  • Campaign Segmentation
  • Channel Management
  • Click Tracking
  • Compliance Management
  • Contact Database
  • Contact Management
  • Content Creation
  • Content Management
  • Conversion Tracking
  • Customer Database
  • Customer Experience Management
  • Customer History
  • Customer Journey Mapping
  • Customer Profiles
  • Customer Segmentation
  • Customer Surveys
  • Customizable Branding
  • Customizable CTAs
  • Customizable Fields
  • Customizable Forms
  • Customizable Reports
  • Customizable Templates
  • Data Capture and Transfer
  • Data Connectors
  • Data Import/Export
  • Data Integration
  • Data Security
  • Data Synchronization
  • Design Management
  • Drag & Drop
  • Drip Campaigns
  • Dynamic Content
  • Email Campaign Management
  • Email Distribution
  • Email Management
  • Email Marketing
  • Email Sequences
  • Email Templates
  • Email Tracking
  • Engagement Tracking
  • Event Triggered Actions
  • Form Builder
  • Forms Management
  • GDPR Compliance
  • Generative AI
  • Geolocation
  • Geotargeting
  • HTML Editor
  • Image Library
  • Landing Pages/Web Forms
  • Lead Capture
  • Lead Generation
  • Lead Management
  • Lead Qualification
  • List Management
  • Location Tracking
  • Mailing List Management
  • Marketing Automation
  • Mobile Access
  • Mobile App
  • Mobile Optimization
  • Monitoring
  • Multi-Campaign
  • Multi-Channel Communication
  • Multi-Channel Marketing
  • Multi-Language
  • Multiple Data Sources
  • Multivariate Testing
  • Newsletter Management
  • Notification Editor
  • Notification Scheduling
  • Personalization
  • Preview Functionality
  • Push Notifications
  • ROI Tracking
  • Real-Time Analytics
  • Real-Time Data
  • Real-Time Monitoring
  • Real-Time Notifications
  • Real-Time Reporting
  • Reporting & Statistics
  • Reporting/Analytics
  • Responsive Web Design
  • SEO Management
  • SMS Marketing
  • SMS Messaging
  • SMS Notifications
  • Sales Analytics
  • Scheduling
  • Search Marketing
  • Secure Data Storage
  • Segmentation
  • Social Marketing
  • Social Media Integration
  • Spam Blocker
  • Subscriber Management
  • Subscription Management
  • Tagging
  • Team Management
  • Template Management
  • Third-Party Integrations
  • Visual Analytics
  • Visual Workflow Management
  • WYSIWYG Editor
  • Web Forms
  • Web Notifications
  • Website Management
  • Website Publishing Options
  • Workflow Automation
  • Workflow Management

Integrations

  • Total integrations95
  • 500Apps
  • ARMember
  • AWS Lambda
  • Acuity Scheduling
  • AdRoll
  • Adobe Commerce
  • Aha!
  • Airtable
  • Amazon Polly
  • Amazon Redshift
  • Amazon S3
  • Amplitude
  • Appcues
  • AppsFlyer
  • Asana
  • AtomX Live Chat
  • Attribution
  • Azure Blob Storage
  • Basecamp
  • Beacon
  • BigCommerce
  • Bitbucket
  • Bizzabo
  • Bookingmood
  • Bouncify
  • Branch
  • Buffer
  • Calendly
  • Canva
  • Carrd
  • Chameleon
  • Chargebee
  • ClickFunnels
  • Close
  • Contactually
  • Convertful
  • Cratejoy
  • Crowdcast
  • Dasheroo
  • Digioh
  • Divi
  • DreamApply
  • Drift
  • Drupal
  • Elementor
  • Emailable
  • Eventbrite
  • Figma
  • Fyrebox
  • Getsitecontrol
  • Ghost
  • Gist
  • GitHub
  • GitLab
  • Google Ads
  • Google Analytics 360
  • Google Calendar
  • Google Contacts
  • Google Docs
  • Google Forms
  • Google Sheets
  • Gravity Forms
  • GrowSurf
  • Harvest
  • Hello Bar
  • Help Scout
  • Hightouch
  • HubSpot Agent Hub
  • HubSpot CRM
  • Hyperise
  • Inkit
  • InnerTrends
  • Instagram
  • InvoiceBerry
  • Involve.me
  • Jira
  • Jotform
  • Jotform Sign
  • Kajabi
  • Kickbox Email Verification
  • Kommo
  • Landingi
  • LeadSync
  • Leadpages
  • LeadsBridge
  • LearnWorlds
  • LinkedIn for Business
  • Litmus
  • Livestorm
  • LoyaltyLion
  • Lumeer
  • Mail Designer 365
  • MailMunch
  • MailerCheck
  • Mailgun
  • Mailjet
  • Make
  • MakePlans
  • ManyChat
  • Marketo Engage
  • Matomo
  • Meta for Business
  • Microsoft SQL Server
  • Mixpanel
  • Mobile Text Alerts
  • Mokapen
  • MyFormData
  • MySQL
  • Netlify
  • NeverBounce
  • NiftyImages
  • Nimble
  • Northpass
  • Nosto
  • OnePageCRM
  • OneSignal
  • Operations Hub
  • OptiMonk
  • OptinMonster
  • OttoKit
  • Outfunnel
  • Outgrow
  • Panoply
  • Paperform
  • Partnero
  • PayPal
  • Payhip
  • Personizely
  • Pinterest
  • Pipedrive
  • Podia
  • Poptin
  • PostgreSQL
  • PrestaShop
  • Privy
  • Productboard
  • ProjectManager
  • Qualaroo
  • Recharge
  • Recurly
  • Relay.app
  • RightMessage
  • RudderStack
  • STITCH
  • Salesflare
  • SatisMeter
  • Segment
  • Shopify
  • Singular
  • Skyvia
  • Slack
  • Snowflake
  • Snowplow BDP
  • SparkPost
  • Squarespace
  • Stitch
  • Stripe
  • Stripo.email
  • Sumo
  • SupportBee
  • SurveyMonkey
  • Survicate
  • Teamwork.com
  • TeleSign Platform
  • The Arena Group
  • Tidio
  • Todoist
  • Trello
  • Trustpilot
  • Twilio
  • Twitter/X
  • Unbounce
  • UserVoice
  • WPForms
  • WhatsApp
  • Wistia
  • WooCommerce
  • WordPress
  • Wrike
  • Ycode
  • YouCanBookMe
  • Zapier
  • Zendesk Suite
  • Zoho CRM
  • Zoho Forms
  • Zoom Workplace
  • authorize.net
  • mailfloss
  • mailparser.io
  • n8n.io
  • Total integrations125
  • 500Apps
  • ARMember
  • AWS Lambda
  • Acuity Scheduling
  • AdRoll
  • Adobe Commerce
  • Aha!
  • Airtable
  • Amazon Polly
  • Amazon Redshift
  • Amazon S3
  • Amplitude
  • Appcues
  • AppsFlyer
  • Asana
  • AtomX Live Chat
  • Attribution
  • Azure Blob Storage
  • Basecamp
  • Beacon
  • BigCommerce
  • Bitbucket
  • Bizzabo
  • Bookingmood
  • Bouncify
  • Branch
  • Buffer
  • Calendly
  • Canva
  • Carrd
  • Chameleon
  • Chargebee
  • ClickFunnels
  • Close
  • Contactually
  • Convertful
  • Cratejoy
  • Crowdcast
  • Dasheroo
  • Digioh
  • Divi
  • DreamApply
  • Drift
  • Drupal
  • Elementor
  • Emailable
  • Eventbrite
  • Figma
  • Fyrebox
  • Getsitecontrol
  • Ghost
  • Gist
  • GitHub
  • GitLab
  • Google Ads
  • Google Analytics 360
  • Google Calendar
  • Google Contacts
  • Google Docs
  • Google Forms
  • Google Sheets
  • Gravity Forms
  • GrowSurf
  • Harvest
  • Hello Bar
  • Help Scout
  • Hightouch
  • HubSpot Agent Hub
  • HubSpot CRM
  • Hyperise
  • Inkit
  • InnerTrends
  • Instagram
  • InvoiceBerry
  • Involve.me
  • Jira
  • Jotform
  • Jotform Sign
  • Kajabi
  • Kickbox Email Verification
  • Kommo
  • Landingi
  • LeadSync
  • Leadpages
  • LeadsBridge
  • LearnWorlds
  • LinkedIn for Business
  • Litmus
  • Livestorm
  • LoyaltyLion
  • Lumeer
  • Mail Designer 365
  • MailMunch
  • MailerCheck
  • Mailgun
  • Mailjet
  • Make
  • MakePlans
  • ManyChat
  • Marketo Engage
  • Matomo
  • Meta for Business
  • Microsoft SQL Server
  • Mixpanel
  • Mobile Text Alerts
  • Mokapen
  • MyFormData
  • MySQL
  • Netlify
  • NeverBounce
  • NiftyImages
  • Nimble
  • Northpass
  • Nosto
  • OnePageCRM
  • OneSignal
  • Operations Hub
  • OptiMonk
  • OptinMonster
  • OttoKit
  • Outfunnel
  • Outgrow
  • Panoply
  • Paperform
  • Partnero
  • PayPal
  • Payhip
  • Personizely
  • Pinterest
  • Pipedrive
  • Podia
  • Poptin
  • PostgreSQL
  • PrestaShop
  • Privy
  • Productboard
  • ProjectManager
  • Qualaroo
  • Recharge
  • Recurly
  • Relay.app
  • RightMessage
  • RudderStack
  • STITCH
  • Salesflare
  • SatisMeter
  • Segment
  • Shopify
  • Singular
  • Skyvia
  • Slack
  • Snowflake
  • Snowplow BDP
  • SparkPost
  • Squarespace
  • Stitch
  • Stripe
  • Stripo.email
  • Sumo
  • SupportBee
  • SurveyMonkey
  • Survicate
  • Teamwork.com
  • TeleSign Platform
  • The Arena Group
  • Tidio
  • Todoist
  • Trello
  • Trustpilot
  • Twilio
  • Twitter/X
  • Unbounce
  • UserVoice
  • WPForms
  • WhatsApp
  • Wistia
  • WooCommerce
  • WordPress
  • Wrike
  • Ycode
  • YouCanBookMe
  • Zapier
  • Zendesk Suite
  • Zoho CRM
  • Zoho Forms
  • Zoom Workplace
  • authorize.net
  • mailfloss
  • mailparser.io
  • n8n.io

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