Customer.io vs EmailOctopus
Customer.io and EmailOctopus are both popular choices in the email marketing platform space. EmailOctopus is the more affordable option at $9/mo — that's $91 less than Customer.io's $100/mo entry point. EmailOctopus offers a free plan (2,500 subscribers), while Customer.io does not. Customer.io stands out with A/B testing and SMS marketing, while EmailOctopus offers landing pages.
Quick Verdict
Customer.io wins on rating, integrations.
EmailOctopus wins on price, deliverability, free tier.
Best for most users: EmailOctopus (beginners).
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.
EmailOctopus
Email marketing made easy
EmailOctopus is a stripped-back email marketing tool that focuses on simplicity and affordability. It's ideal for small businesses and creators who want the essentials without paying for features they won't use. Built on Amazon SES for reliable deliverability.
Feature Comparison
| Feature | Customer.io | EmailOctopus |
|---|---|---|
| Rating | 4.4/5 | 4.2/5 |
| Starting Price | $100/mo | $9/mo |
| Free Plan | No free plan | 2,500 subscribers |
| Founded | 2012 | 2014 |
| Email Templates | 30 | 30 |
| Integrations | 150 | 45 |
| Deliverability Rate | 96% | 97.5% |
| 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
EmailOctopus: Pros & Cons
Pros
- +Generous free plan (2,500 subscribers)
- +Very affordable Pro plan
- +Simple and clean interface
- +Good deliverability using Amazon SES
- +Easy migration from other platforms
Cons
- −Limited feature set compared to competitors
- −No A/B testing
- −Small template library
- −Basic automation capabilities
- −No ecommerce features
The Verdict
Customer.io edges ahead with a 4.4/5 rating compared to EmailOctopus's 4.2/5. The gap comes mainly from feature depth (4.6 vs 3.9) and support (4.3 vs 3.8). On deliverability, EmailOctopus reports 97.5% compared to 96% for Customer.io — a meaningful difference if inbox placement is critical for your campaigns.
| Criterion | Weight | Customer.io | EmailOctopus |
|---|---|---|---|
| Starting Price | 30% | $100/mo | $9/mo |
| Deliverability | 25% | 96% | 97.5% |
| Rating | 25% | 4.4/5 | 4.2/5 |
| Integrations | 10% | 150 | 45 |
| Free Tier | 10% | No | Yes |
Weights determine how much each criterion counts toward the final score. See full methodology
Choose Customer.io if…
- + You need SMS marketing
- + You need A/B testing
- + You need advanced analytics
- + You're a product led saas companies with event driven messaging needs
Choose EmailOctopus if…
- + You want lower starting costs ($9/mo)
- + You need a free plan to get started
- + You need built-in landing pages
- + You're a beginners