EmailOctopus vs Substack
EmailOctopus is a email marketing platform while Substack is a newsletter platform. Substack starts at free versus $9/mo for EmailOctopus. Both offer free plans to get started. EmailOctopus has the edge with marketing automation, landing pages, API access.
Quick Verdict
EmailOctopus wins on deliverability, integrations.
Substack wins on price, rating.
Best for most users: Substack (independent writers and journalists).
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.
Substack
The newsletter platform where writers build independent media businesses
Substack is the dominant newsletter platform that uniquely combines free publishing tools with a 10% revenue-share model, letting writers launch subscription-based media businesses with zero upfront cost. Beyond newsletters, it has evolved into a full creator ecosystem with podcasts, video, livestreaming, Notes (microblogging), and community Chat, backed by a powerful built-in discovery network that helps writers find audiences organically.
Feature Comparison
| Feature | EmailOctopus | Substack |
|---|---|---|
| Rating | 4.2/5 | 4.4/5 |
| Starting Price | $9/mo | Free |
| Free Plan | 2,500 subscribers | Unlimited subscribers, unlimited emails, all core features free — Substack only charges when you earn |
| Founded | 2014 | 2017 |
| Email Templates | 30 | 1 |
| Integrations | 45 | 0 |
| Deliverability Rate | 97.5% | 95% |
| 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 | ✕ | ✕ |
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
Substack: Pros & Cons
Pros
- +Completely free to start with no upfront costs — zero barrier to entry with all core publishing features available immediately
- +Built-in audience discovery network with Recommendations and Notes driving organic subscriber growth (users report gaining 1,000+ subscribers through Recommendations alone)
- +True content ownership: creators can export their full subscriber list and content at any time to migrate elsewhere
- +Multimedia platform supporting newsletters, podcasts, video, livestreaming, Notes, and Chat communities in a single integrated experience
- +Strong reader engagement with genuine community interaction through comments, Chat, and Notes — higher engagement rates than typical social media platforms
Cons
- −The 10% platform fee plus Stripe's ~2.9% + $0.30 per transaction creates a 13-16% total take rate that becomes very expensive at scale (e.g., $1,300-$1,600/month on $10K revenue)
- −No email marketing automation, segmentation, A/B testing, or advanced personalization — all subscribers receive identical emails with no conditional logic
- −No public API and zero native third-party integrations — cannot connect to CRMs, e-commerce platforms, Zapier, or other marketing tools
- −Limited design customization with a single standardized template — no drag-and-drop editor, no custom HTML, and minimal branding options
- −Platform can remove content or delete accounts without notice, and customer support is difficult to reach for issue resolution
The Verdict
Substack edges ahead with a 4.4/5 rating compared to EmailOctopus's 4.2/5. The gap comes mainly from support (4.3 vs 3.8) and value for money (4.9 vs 4.5). On deliverability, EmailOctopus reports 97.5% compared to 95% for Substack — a meaningful difference if inbox placement is critical for your campaigns.
| Criterion | Weight | EmailOctopus | Substack |
|---|---|---|---|
| Starting Price | 30% | $9/mo | Free |
| Deliverability | 25% | 97.5% | 95% |
| Rating | 25% | 4.2/5 | 4.4/5 |
| Integrations | 10% | 45 | 0 |
| Free Tier | 10% | Yes | Yes |
Weights determine how much each criterion counts toward the final score. See full methodology
Choose EmailOctopus if…
- + You need marketing automation
- + You need API access for custom integrations
- + You need built-in landing pages
- + You're a beginners
Choose Substack if…
- + You want lower starting costs (Free)
- + You're a independent writers and journalists
- + You're a newsletter creators monetizing through paid subscriptions