In-app messaging

Personalize your app experience

Deliver dynamic, personalized content embedded within your web and mobile apps. Seamlessly combine in-app messages with email, push, SMS, and webhooks for high-performing omnichannel campaigns.

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In-app messaging
A nudge is all it takes
Engagement

A nudge is all it takes 

Congrats, your customer is in your app! Guide them to take action with clear, consistent in-app messages—and start achieving results.

  • Keep messages top of mind: Enhance your engagement strategy with persistent in-app alerts that stay active until acted upon or dismissed.

  • Targeted placements: Use page rules to keep messages relevant by placing content on specific or frequently accessed pages or screens.

  • Drive action with data: Encourage immediate reactions with in-app messages triggered by real-time customer behavior.

Performance

The capabilities and metrics you need 

Reduce reliance on developers with our no-code builder and intelligent segmentation. Monitor message performance with real-time metrics and analytics within workflows.

Learn through experimentation

Conduct A/B and multivariate tests to fine-tune your message and timing, ensuring optimal performance.

Analyze message impact

Utilize a comprehensive dashboard to monitor metrics like sent, opens, clicks, conversions, and fails.

Gain precise feedback with microsurveys

Leverage in-app surveys to gather audience feedback. Easily integrate surveys to gather insights, track responses, and trigger follow-up messages based on customer response. Elevate your understanding of user preferences and tailor your strategies for maximum impact.

Omnichannel automation
Omnichannel automation

One platform for product and marketing messages 

Craft and automate personalized on-brand experiences by tailoring messages to your audience's activities within and outside your app. Unlock endless engagement possibilities, all within our visual workflow builder.

In-app message features 

Modals

Static in-app pop-ups with screen overlay

Banners

Rectangular message displays on the top or bottom of screen

Inline

Embed messages in your web app interface

Microsurveys

Request short feedback from your audience, like CSAT surveys

Carousel

Content users can swipe without dismissing your message

Persistent messages

Continue message display until the user dismisses or it expires

Templates

Create messages from pre-built templates or start from scratch

Dynamic content

Use Liquid to personalize your messages

A/B testing

Optimize messages and monitor performance

Metrics

Monitor message performance with sent, opens, clicks, and fails

Tracked responses

Gain insights into in-app audience engagement

Actions

Tailor user interactions with predefined or custom actions

Page rules

Choose the page or screen your message is displayed on

Priority

Choose the order of messages sent to a person

Mobile and web SDKs

iOS, Android, React Native, Flutter Plugin, Expo, JavaScript

Multi-language

Store language preferences for message localization

Developer resources

Get an easy yes from engineering 

Win the hearts of your mobile engineering team with our comprehensive developer documentation and intuitive SDKs. Streamline your integration process and watch your in-app messaging strategy elevate customer satisfaction, engagement, and loyalty. Get started with our SDKs.

Open-source SDKs (MIT licensed)

With semantic versioning (semver) SDK updates are frequent, ensuring access to the latest offering and keeping up with platform updates.

Designed with automated testing in mind

Mocking plus dependency injection-friendly. Snapshot builds and quick releases so less time waiting for fixes.

Fully documented

Covers everything from implementation to common use cases. Access to internal testing apps for test automation and QA. Easy to set up and flexible to customize to your unique use cases.

Up-to-date with the latest versions

Available on package managers like Maven Central (Android), Swift Package Manager and Cocoapods (iOS and VisionOS) and more.

Resources

In-app messaging strategies 

Discover guides and best practices for sending relevant in-app messages based on customer interactions.

Customers love us

Preferred  by  product-led  companies 

WoofTrax

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. Terrific customer support combined with their great product makes Customer.io an important partner for our mobile app.

Doug Hexter
Doug HexterCEO
Clearbit-w

Customer.io is the most intuitive and robust omnichannel messaging platform I’ve ever used. They beat the competition out of the water.

Alex MacCaw
Alex MacCawFounder
Bamboo

Messaging frequency is key for our strategy. We can’t email our customers daily, so increasing frequency with a multi-channel strategy is how we can scale message volume. The conversion rates prove that strategy is working.

Ugo Iwuchukwu
Ugo IwuchukwuHead of Marketing & Partnerships
Klar

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
Diego SchocherBusiness Architect
ZEN.com

The multi-channel approach allows us to test and refine our strategies through A/B testing, helping us understand what value propositions motivate our users.

Michał Dąbrowski
Michał DąbrowskiCommunications & Product Growth Manager

Supercharge your
 messaging automation 

  • 14-day free trial
  • No credit card required
  • Cancel anytime