Get up to 12 months of Customer.io free
We’re passionate about supporting startups because not too long ago, we were one. Build, launch, and scale your customer messaging, all in one platform.
After you apply, you’ll be prompted to create an account.

Loved by thousands of startups
Startup Program eligibility
To be eligible, your business must meet the following requirements.
Funding
Your business has raised less than $10 million in total funding.
Contact lists
They must be obtained through standard methods, not purchased.
Service
Your business is currently not and has never been a customer of Customer.io.
No strings attached. Really.
When your free term is coming to an end, you'll get plenty of notice, and an exclusive offer built for startups.
Today
Apply and enroll. Up to 12 months of free access begins.
Months 1-12
Build and grow. Build and scale your messaging with us.
60 days left
Check-in. We'll email you reminders before graduation.
Graduation
Graduate. Continue on an exclusive graduation offer.
We've got your back
Cancel anytime, or reach out before your free term ends. We'll help you choose the path that's right for your startup.
Plans and pricing
Join thousands of startups using Customer.io to build and scale their customer messaging.
Startup includes all Essentials features with additional user profiles
Apply for StartupApply for StartupBilled monthly
Limited support
Send emails, SMS, push notifications

Work with startups?
Join 150+ venture firms, accelerators, and founder communities partnering with Customer.io to support the startups they work with.
Some of our startup partners include:
- Y Combinator
- Techstars
- Segment
- Secret
- Mercury
- GAN
- F6S
- Seedcamp
- Tech for Black Founders
- Tiny Seed
- TechCrunch
- and more
Guides to get you started
Explore practical ways to build better messaging, improve retention, and keep customers engaged.
Frequently asked questions
Startup Program gives eligible startups that are new to Customer.io access to our customer engagement platform, including Journeys, Data Pipelines, Messaging, and our AI Agent.
With Customer.io, you can create personalized customer journeys, send omnichannel messages, unify customer data, and use AI to help build, analyze, and optimize campaigns faster.
Eligible startups receive up to 12 months in the program, including up to 30,000 customer profiles at no cost.
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Supercharge your messaging
- 14-day free trial
- No credit card required
- Cancel anytime