Mailmodo vs Substack
Mailmodo is a email marketing platform while Substack is a newsletter platform. Substack starts at free versus $49/mo for Mailmodo. Both offer free plans to get started. Mailmodo has the edge with marketing automation, A/B testing, ecommerce integrations.
Quick Verdict
Mailmodo wins on rating, integrations.
Substack wins on price.
Best for most users: Mailmodo (marketers seeking higher engagement).
Mailmodo
Interactive AMP email marketing with in-email forms and surveys
Mailmodo is the pioneering interactive email marketing platform that uses AMP technology to let recipients fill forms, take surveys, book meetings, and make purchases directly inside emails without clicking through to a landing page. With AI-powered template generation and a drag-and-drop editor, it makes interactive email creation accessible to marketers seeking 2-3x higher engagement rates, starting at $49/month.
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 | Mailmodo | Substack |
|---|---|---|
| Rating | 4.5/5 | 4.4/5 |
| Starting Price | $49/mo | Free |
| Free Plan | Limited sending credits, 1 active journey, 500 active contacts per journey | Unlimited subscribers, unlimited emails, all core features free — Substack only charges when you earn |
| Founded | 2020 | 2017 |
| Email Templates | 100 | 1 |
| Integrations | 40 | 0 |
| Deliverability Rate | 95% | 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 | ✓ | ✕ |
Mailmodo: Pros & Cons
Pros
- +Interactive AMP emails allow recipients to fill forms, book meetings, and make purchases directly inside the email without leaving their inbox
- +Drag-and-drop editor with AI-powered template generation makes creating interactive emails accessible to non-technical marketers
- +Proven to increase engagement — interactive emails report 2-3x higher click rates than traditional HTML emails
- +AMP support extended to Apple Mail through innovative workarounds beyond just Gmail and Yahoo
- +21-day free trial gives ample time to test interactive email capabilities before committing
Cons
- −AMP email support is limited to Gmail, Yahoo, Mail.ru, and Apple Mail — Outlook and other clients fall back to HTML
- −Starting at $49/month for just 2,500 contacts makes it expensive compared to traditional email platforms
- −Relatively new platform (founded 2020) with a smaller feature set than established competitors
- −No SMS marketing or multichannel capabilities — email only
- −Learning curve for understanding AMP email limitations and designing for fallback HTML rendering
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
Mailmodo and Substack are closely matched — both score within 0.1 points of each other in our overall rating. Your decision should come down to specific needs rather than overall quality.
| Criterion | Weight | Mailmodo | Substack |
|---|---|---|---|
| Starting Price | 30% | $49/mo | Free |
| Deliverability | 25% | 95% | 95% |
| Rating | 25% | 4.5/5 | 4.4/5 |
| Integrations | 10% | 40 | 0 |
| Free Tier | 10% | Yes | Yes |
Weights determine how much each criterion counts toward the final score. See full methodology
Choose Mailmodo if…
- + You need marketing automation
- + You need ecommerce integrations
- + You need API access for custom integrations
- + You need A/B testing
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