Embrace a mobile multi-channel strategy
Embrace a mobile multi-channel strategy
Integrate SMS with your other channels, delivering personalized experiences and amplifying your messaging strategy with every text.
Form not working? Click here to get your referral link
Trusted by 8,000+ brands
Embrace a mobile multi-channel strategy
Embrace a mobile multi-channel strategy
Integrate SMS with your other channels, delivering personalized experiences and amplifying your messaging strategy with every text.
Form not working? Click here to get your referral link
Trusted by 8,000+ brands
Embrace a mobile multi-channel strategy
Embrace a mobile multi-channel strategy
Integrate SMS with your other channels, delivering personalized experiences and amplifying your messaging strategy with every text.
Form not working?
Click here to get your referral link
Trusted by 8,000+ brands
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.
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.




Reach customers instantly
Engage across the entire journey
Deliver messages directly to your audience’s phones for immediate visibility and action.
Surface high-intent segments and automatically uncover behavioral patterns in your first-party data.
Trigger messages from real behavior
Smarter journeys.
Send SMS based on events, actions, and customer data in real time.
Build and optimize cross-channel workflows from a conversation, with logic the Agent configures for you.
Enhance messages with rich content
Stronger content.
Use images, links, and dynamic content to make every message more engaging.
Draft, refine, and iterate on messaging while the Agent maintains your brand voice and guardrails.
Mobile messaging
Send timely, personalized SMS that drives action
Mobile messaging
Send timely, personalized SMS that drives action
Mobile messaging
Send timely, personalized SMS that drives action
Trigger
Reach customers at the perfect moment
Use real-time events and behavioral data to send messages when they’re most relevant—driving immediate engagement and response.

Trigger
Reach customers at the perfect moment
Use real-time events and behavioral data to send messages when they’re most relevant—driving immediate engagement and response.

Personalize
Make every message feel one-to-one
Leverage customer data, segmentation, and dynamic content to tailor each message and increase relevance across your audience.

Personalize
Make every message feel one-to-one
Leverage customer data, segmentation, and dynamic content to tailor each message and increase relevance across your audience.

Orchestrate
Integrate SMS into every journey
Combine SMS with email, push, and in-app messaging in a single workflow to create seamless, multi-channel experiences.

Orchestrate
Integrate SMS into every journey
Combine SMS with email, push, and in-app messaging in a single workflow to create seamless, multi-channel experiences.

Features
SMS Features
Unlimited SMS
Send unlimited non-email messages on all planssum
MMS
Add images, videos, and GIFs to enhance messages
Send WhatsApp messages through Twilio
Dynamic content
Use Liquid to personalize your messages
SMS providers
Twilio by default or third-party providers via webhooks
Compliance
Ensure GDPR, AICPA, HIPAA, and CCPA compliance
Time windows
Send messages in specific time ranges (staying TCPA compliant)
Test sends code support
Ensure your SMS works by sending test messages
Compliance
Ensure GDPR, AICPA, HIPAA, and CCPA compliance
A/B Testing
Optimize messages and monitor performance
Analytics + metrics
Gain insight into audience behavior to improve success
Queue drafts
QA messages and conditions before anything is sent live
Features
SMS Features
Unlimited SMS
Send unlimited non-email messages on all planssum
MMS
Add images, videos, and GIFs to enhance messages
Send WhatsApp messages through Twilio
Dynamic content
Use Liquid to personalize your messages
SMS providers
Twilio by default or third-party providers via webhooks
Compliance
Ensure GDPR, AICPA, HIPAA, and CCPA compliance
Time windows
Send messages in specific time ranges (staying TCPA compliant)
Test sends code support
Ensure your SMS works by sending test messages
Compliance
Ensure GDPR, AICPA, HIPAA, and CCPA compliance
A/B Testing
Optimize messages and monitor performance
Analytics + metrics
Gain insight into audience behavior to improve success
Queue drafts
QA messages and conditions before anything is sent live
Features
SMS Features
Unlimited SMS
Send unlimited non-email messages on all planssum
MMS
Add images, videos, and GIFs to enhance messages
Send WhatsApp messages through Twilio
Dynamic content
Use Liquid to personalize your messages
SMS providers
Twilio by default or third-party providers via webhooks
Compliance
Ensure GDPR, AICPA, HIPAA, and CCPA compliance
Time windows
Send messages in specific time ranges (staying TCPA compliant)
Test sends code support
Ensure your SMS works by sending test messages
Compliance
Ensure GDPR, AICPA, HIPAA, and CCPA compliance
A/B Testing
Optimize messages and monitor performance
Analytics + metrics
Gain insight into audience behavior to improve success
Queue drafts
QA messages and conditions before anything is sent live
Customers love us
Preferred by product-led companies


Customer.io can do what other marketing automation tools can’t—take in millions of events from users per day, segment through them almost instantly, and use any campaign action imaginable to create workflows.
Hamish Elmslie
COO


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


We have been using Customer.io since 2015, and it is a flexible and powerful platform. We can create customized campaigns based on how often our users walk their dogs, which makes our messaging more effective for us and our sponsors.
Doug Hexter
CEO






