
Marketing & Email
Customer.io
Developer-focused behavioral messaging across email, push, SMS, and in-app.
4.7· 87 reviews· via CapterraFounded 2012 · Portland, OR
What is Customer.io?
Customer.io is a behavioral messaging platform that sends automated, data-driven messages across email, push, SMS, and in-app based on user activity. It is developer-focused and built for product-led and lifecycle marketing.
Best known for: Behavioral, data-driven customer messaging
Key features
- Behavioral trigger messaging
- Email, push, SMS, and in-app channels
- Visual workflow builder
- Real-time data segmentation
- A/B testing
- APIs and webhooks
Who Customer.io is best for
- Product and growth teams that want event-driven, behavioral messaging
- SaaS companies that need messaging tied to real product data
- Developer-led teams comfortable building with APIs and data pipelines
Ideal team: Product-led SaaS and tech companies (10–500) with engineering resources that want granular, data-driven lifecycle messaging.
Customer.io pricing
Essentials
$100/per profile / mo
- Up to ~5,000 profiles
- Email, push & SMS channels
- Core data integrations
Premium
$1000/per profile / mo
- From $1,000/mo (scales by profiles)
- Dedicated success manager
- HIPAA compliance available
Costs to watch before you commit
- Cost scales on both profile count and message volume — overages beyond allotments add up.
- Only Essentials has a public entry price; Standard, Premium, and Enterprise are all quote-based.
- Non-people 'objects' count toward your billable profile total.
- HIPAA compliance and dedicated infrastructure are gated to higher tiers.
Top Customer.io alternatives
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MailerLiteAffordable, easy email marketing and automation for creators and SMBs.