Customer.io vs. Klaviyo
The platform that adapts to any industry
Feeling constrained by your current platform's limitations? Customer.io is built for forward-thinking, innovative companies, providing the flexibility, security, and scalability that fast-growing teams need to achieve their big marketing dreams.
With the power of omnichannel marketing, you can create a personalized customer experience across email, in-app, SMS, WhatsApp, LINE, and push notifications, building relationships at every stage of the customer lifecycle, while staying compliant even in highly regulated industries.
Trusted by 9,000+ brands
Customer.io vs. Klaviyo
The platform that adapts to any industry
Feeling constrained by your current platform's limitations? Customer.io is built for forward-thinking, innovative companies, providing the flexibility, security, and scalability that fast-growing teams need to achieve their big marketing dreams.
With the power of omnichannel marketing, you can create a personalized customer experience across email, in-app, SMS, WhatsApp, LINE, and push notifications, building relationships at every stage of the customer lifecycle, while staying compliant even in highly regulated industries.
Trusted by 9,000+ brands
Customer.io vs. Klaviyo
The platform that adapts to any industry
Feeling constrained by your current platform's limitations? Customer.io is built for forward-thinking, innovative companies, providing the flexibility, security, and scalability that fast-growing teams need to achieve their big marketing dreams.
With the power of omnichannel marketing, you can create a personalized customer experience across email, in-app, SMS, WhatsApp, LINE, and push notifications, building relationships at every stage of the customer lifecycle, while staying compliant even in highly regulated industries.
Trusted by 9,000+ brands
features
Top reasons companies choose us over Klaviyo
Customer.io | Klaviyo | |
|---|---|---|
Unlimited segmentation | Yes | No |
HIPAA compliance | Yes | No |
Mobile SDKs | Yes | No |
Anonymous event tracking | Yes | No |
Data warehouse sync and Reverse ETL included | Yes | No |
World-class support | Yes | No |
Mutli-channel marketing
Send dynamic mobile messages like in-app, push, SMS, WhatsApp, and LINE alongside email to engage users wherever they are in their lifecycle.
Mutli-channel marketing
Send dynamic mobile messages like in-app, push, SMS, WhatsApp, and LINE alongside email to engage users wherever they are in their lifecycle.
Built to scale
From small startups to global enterprise companies with hundreds of millions of users, we built our platform to grow alongside you.
Built to scale
From small startups to global enterprise companies with hundreds of millions of users, we built our platform to grow alongside you.
Compliance made easy
Ensure security standards such as GDPR, CCPA, HIPAA, and SOC 2 Type II, are met.
Compliance made easy
Ensure security standards such as GDPR, CCPA, HIPAA, and SOC 2 Type II, are met.
Scale, flex, and innovate
Designed for universal usability, our platform minimizes operational overhead, ensuring maximum ROI for brands of all sizes.
99.98%
Platform uptime
99%
Customer satisfaction score
12B+
Daily API calls
100B+
Messages sent in 2025
100B+
Webhooks sent in 2025
24/5
Global support coverage
Scale, flex, and innovate
Designed for universal usability, our platform minimizes operational overhead, ensuring maximum ROI for brands of all sizes.
99.98%
Platform uptime
99%
Customer satisfaction score
12B+
Daily API calls
100B+
Messages sent in 2025
100B+
Webhooks sent in 2025
24/5
Global support coverage
We unify your data, messaging, and AI into a single platform, so every interaction with your customers is stronger and more relevant than the last.
Advanced automation
Create complex, real-time, event-triggered campaigns based on user behavior and actions. From the visual workflow builder, trigger emails, SMS, WhatsApp, LINE, push, and in-app campaigns based on specific events or user interactions.
Unlimited segmentation
Avoid limitations on segmentation and use as much data as you want to create robust audience groups for your next one-off broadcast or campaign. Intelligent segmentation at your fingertips!
Data made flexible
Go beyond A/B testing with the power to introduce multivariate testing, allowing you to learn more from your audience in less time.
We unify your data, messaging, and AI into a single platform, so every interaction with your customers is stronger and more relevant than the last.
Advanced automation
Create complex, real-time, event-triggered campaigns based on user behavior and actions. From the visual workflow builder, trigger emails, SMS, WhatsApp, LINE, push, and in-app campaigns based on specific events or user interactions.
Unlimited segmentation
Avoid limitations on segmentation and use as much data as you want to create robust audience groups for your next one-off broadcast or campaign. Intelligent segmentation at your fingertips!
Data made flexible
Go beyond A/B testing with the power to introduce multivariate testing, allowing you to learn more from your audience in less time.
AI Native
Smarter marketing with AI
We're enabling marketers to say more, do more, and listen more—your tech stack fully connected, allowing you to surface insights faster and act on them with confidence.
Translations
Translate your email, push notifications, in-app messages, or SMS messages across 200+ language variations in seconds. No outside contractors, or long delivery timelines needed!
MCP Server
Customer.io's MCP server offers both read and write capabilities allowing users to query data, test their integrations, and create segments or content. And it works with Claude, ChatGPT, and Cursor.
Generate Brand Styles
Avoid off-brand emails, with generated brand styles based on your domain. Your color palettes, fonts, and buttons will be automatically generated—enabling you to craft content quick.
AI Native
Smarter marketing with AI
We're enabling marketers to say more, do more, and listen more—your tech stack fully connected, allowing you to surface insights faster and act on them with confidence.
Translations
Translate your email, push notifications, in-app messages, or SMS messages across 200+ language variations in seconds. No outside contractors, or long delivery timelines needed!
MCP Server
Customer.io's MCP server offers both read and write capabilities allowing users to query data, test their integrations, and create segments or content. And it works with Claude, ChatGPT, and Cursor.
Generate Brand Styles
Avoid off-brand emails, with generated brand styles based on your domain. Your color palettes, fonts, and buttons will be automatically generated—enabling you to craft content quick.
AI Native
Smarter marketing with AI
We're enabling marketers to say more, do more, and listen more—your tech stack fully connected, allowing you to surface insights faster and act on them with confidence.
Translations
Translate your email, push notifications, in-app messages, or SMS messages across 200+ language variations in seconds. No outside contractors, or long delivery timelines needed!
MCP Server
Customer.io's MCP server offers both read and write capabilities allowing users to query data, test their integrations, and create segments or content. And it works with Claude, ChatGPT, and Cursor.
Generate Brand Styles
Avoid off-brand emails, with generated brand styles based on your domain. Your color palettes, fonts, and buttons will be automatically generated—enabling you to craft content quick.
Security you can trust
Stay compliant with GDPR, HIPAA, SOC 2 Type II, CCPA, and other regulations.
Set rules to proactively block restricted personal data.
Keep data safe by restricting access by user role.
Security you can trust
Stay compliant with GDPR, HIPAA, SOC 2 Type II, CCPA, and other regulations.
Set rules to proactively block restricted personal data.
Keep data safe by restricting access by user role.
Security you can trust
Stay compliant with GDPR, HIPAA, SOC 2 Type II, CCPA, and other regulations.
Set rules to proactively block restricted personal data.
Keep data safe by restricting access by user role.
Customers love us
Preferred by product-led companies
Up until now, we’ve sold primarily through e-commerce channels. Now, we’re going much more omnichannel and want to integrate our product much more closely with our email marketing, we made the switch from Klaviyo to Customer.io.
Daan Goossens
VP of Growth
We know how important data is. Not only that, but to own your own data. That’s why we chose Customer.io.
Daniel Sand
CEO
We use all channels in our campaigns, when it makes sense to do so. Last month we sent over 11M emails, over 5M push notifications, almost 1M in-app messages, and almost 100,000 SMS messages from Customer.io.
Diego Schocher
Business Architect
