Customer.io vs Omnisend
Customer.io and Omnisend are both popular choices in the email marketing platform space. Omnisend is the more affordable option at $16/mo — that's $84 less than Customer.io's $100/mo entry point. Omnisend offers a free plan (250 contacts, 500 emails/month), while Customer.io does not. Omnisend has the edge with landing pages, ecommerce integrations.
Quick Verdict
Omnisend wins on price, deliverability, rating, integrations, free tier.
Best for most users: Omnisend (ecommerce).
Customer.io
Behavioral messaging platform for product-led SaaS and tech companies
Customer.io is a behavioral messaging platform built for product-led SaaS companies that need to trigger automated emails, SMS, push notifications, and in-app messages based on real-time user events. Its visual workflow builder and Liquid templating provide deep personalization, while the built-in Data Pipelines act as a lightweight CDP. Trusted by 8,000+ companies including Notion and Segment, it starts at $100/month for 5,000 profiles.
Omnisend
Ecommerce email and SMS made easy
Omnisend is an ecommerce-focused marketing platform that combines email, SMS, and web push notifications. It offers pre-built automation workflows for common ecommerce scenarios like cart abandonment, order confirmation, and product recommendations.
Feature Comparison
| Feature | Customer.io | Omnisend |
|---|---|---|
| Rating | 4.4/5 | 4.6/5 |
| Starting Price | $100/mo | $16/mo |
| Free Plan | No free plan | 250 contacts, 500 emails/month |
| Founded | 2012 | 2014 |
| Email Templates | 30 | 130 |
| Integrations | 150 | 200 |
| Deliverability Rate | 96% | 98.5% |
| Marketing Automation | ✓ | ✓ |
| A/B Testing | ✓ | ✓ |
| Landing Pages | ✕ | ✓ |
| Segmentation | ✓ | ✓ |
| Drag & Drop Editor | ✓ | ✓ |
| SMS Marketing | ✓ | ✓ |
| Ecommerce Features | ✕ | ✓ |
| API Access | ✓ | ✓ |
| Multi-Language | ✓ | ✓ |
| Web Push Notifications | ✓ | ✓ |
| Live Chat | ✕ | ✓ |
| Advanced Analytics | ✓ | ✓ |
Customer.io: Pros & Cons
Pros
- +Powerful visual workflow builder with real-time event-based triggers for behavioral automation
- +Omnichannel messaging across email, SMS, push notifications, in-app, and webhooks in one platform
- +Built-in Data Pipelines that serve as a lightweight CDP, unifying web, mobile, and backend data
- +Segment builder is intuitive enough for marketers without requiring dedicated engineering support
- +Startup Program offers up to 12 months free for qualifying early-stage companies
Cons
- −Essentials plan starts at $100/month for only 5,000 profiles — expensive for small teams
- −Steep learning curve for non-technical users, especially with Liquid templating syntax
- −Pricing scales aggressively past 10K profiles with significant jumps between plan tiers
- −Template editor feels restrictive for highly custom-coded email layouts
- −Searching for past messages and editing templates can be unintuitive and slow
Omnisend: Pros & Cons
Pros
- +Purpose-built for ecommerce
- +Pre-built automation workflows for common ecommerce flows
- +SMS, email, and web push in one platform
- +Easy Shopify and WooCommerce integration
- +Good free plan for small stores
Cons
- −Not suitable for non-ecommerce use cases
- −Free plan very limited (250 contacts)
- −Gets pricey at higher subscriber counts
- −Fewer general integrations than Mailchimp
- −Limited blog/content marketing features
The Verdict
Customer.io and Omnisend are closely matched — both score within 0.2 points of each other in our overall rating. Your decision should come down to specific needs rather than overall quality. On deliverability, Omnisend reports 98.5% compared to 96% for Customer.io — a meaningful difference if inbox placement is critical for your campaigns.
| Criterion | Weight | Customer.io | Omnisend |
|---|---|---|---|
| Starting Price | 30% | $100/mo | $16/mo |
| Deliverability | 25% | 96% | 98.5% |
| Rating | 25% | 4.4/5 | 4.6/5 |
| Integrations | 10% | 150 | 200 |
| Free Tier | 10% | No | Yes |
Weights determine how much each criterion counts toward the final score. See full methodology
Choose Customer.io if…
- + You're a product led saas companies with event driven messaging needs
- + You're a technical marketing teams that want advanced automation with liquid logic
- + Powerful visual workflow builder with real-time event-based triggers for behavioral automation
Choose Omnisend if…
- + You want lower starting costs ($16/mo)
- + You need a free plan to get started
- + You need ecommerce integrations
- + You need built-in landing pages