SendiventvsCustomer.io

How Sendivent and Customer.io think about messaging

Customer.io is a marketing automation platform that helps you build automated campaigns based on user behavior. It's designed for marketers who need visual workflow builders, segmentation, and A/B testing.

Sendivent is a developer-first notification platform. Your backend emits events, and Sendivent routes them to the right channels. It's built for product teams who want to send transactional notifications without learning a campaign builder.

The core difference: Customer.io is for marketing-driven messaging. Sendivent is for product-driven notifications.

Marketing automation vs product notifications

Customer.io excels at:

• Onboarding email sequences
• Re-engagement campaigns
• Behavioral segmentation
• Marketing experiments

Sendivent excels at:

• Order confirmations and receipts
• Password reset and security alerts
• Team notifications via Slack
• Real-time transactional updates

If your messages are triggered by product events (user actions, system events), Sendivent is simpler. If you need complex marketing workflows, Customer.io is more capable.

Developer experience

Customer.io's approach:

• Visual workflow builder
• Point-and-click campaign creation
• JavaScript SDK for tracking
• Marketers can self-serve

Sendivent's approach:

• Clean REST API
• Event-based triggers from your backend
• Templates managed in dashboard
• Developers stay in control

Pricing comparison

Customer.io starts at $100/month for their Essentials plan, with pricing based on profile count. Enterprise features require their Premium plan.

Sendivent charges per person notified, starting with a free tier of 1,000 people/month. You pay for active users, not stored profiles.

When to use each

Choose Customer.io if your marketing team needs to build and iterate on campaigns without engineering support, or if you need advanced segmentation and A/B testing.

Choose Sendivent if you're building product notifications that engineers control, want a simpler API, or need channels like Slack for internal alerts.

Bottom line

Customer.io is a marketing platform that happens to have an API. Sendivent is a developer tool that happens to have a dashboard. Choose based on who owns your messaging: marketing or engineering.