ConvertKit vs Substack
ConvertKit
Creator-focused email marketing platform emphasizing simplicity and community.
Online course creators, coaches, entrepreneurs, and creators building multiple revenue streams through email marketing
Substack
Newsletter platform with paid subscription monetization, optimized for writers building loyal reader bases.
Independent writers, journalists, newsletter creators, and authors who prioritize simplicity and pay-as-you-go monetization
Short Answer
ConvertKit charges fixed monthly fees ($33-$89+) with advanced automation and marketing tools, while Substack operates on a 10% revenue-share model with no upfront costs, making it ideal for writers focused purely on content. ConvertKit suits creators building email businesses, while Substack attracts indie writers and newsletters.
Our Verdict
AI-assistedConvertKit is the superior choice for creators building comprehensive email marketing businesses with multiple revenue streams and complex automations. Substack excels for writers and journalists prioritizing simplicity and minimal overhead, with its revenue-share model rewarding high subscriber bases. The best platform depends on whether you need sophisticated marketing tools or prefer a distraction-free writing environment.
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Choose ConvertKit if
Online course creators, coaches, entrepreneurs, and creators building multiple revenue streams through email marketing
Choose Substack if
Independent writers, journalists, newsletter creators, and authors who prioritize simplicity and pay-as-you-go monetization
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Key Differences at a Glance
Key Facts & Figures
| Metric | ConvertKit | Substack | Diff |
|---|---|---|---|
| Base Monthly Price(USD) | $25 (paid plan) | — | — |
| Native Integrations(count) | 50+ | — | — |
| Cost at 10,000 Subscribers(USD/month) | $119 (10k subscriber tier) | — | — |
| Starting Monthly Cost(USD) | $33/month (Creator plan, billed yearly) | $0 (revenue-share only) | — |
| Free Subscriber Limit(subscribers) | 1,000 subscribers | Unlimited | — |
| Platform Fee on Revenue(%) | 0% | 10% | -100% |
| Third-party Integrations(integrations) | 150+ | 15-20 | +733% |
| Setup Time for Beginners(hours) | 4-6 hours | 30 minutes - 1 hour | +567% |
| Starting Cost(USD/year) | $300 minimum | — | — |
| Monthly Active Users (Platform Reach)(millions) | 0 (creator-owned only) | — | — |
| Setup Time to First Publish(minutes) | 60-120 minutes | — | — |
| Cost per 10,000 Subscribers/Year(USD) | $360 | — | — |
| Base Price (Monthly)(USD) | $25 | — | — |
| Free Trial Duration(days) | 14 days | — | — |
| Landing Page Templates(count) | 12 | — | — |
| Customer Support Response Time(hours) | 12-18 hours average | — | — |
| Starting Price(USD/month) | $25/month | — | — |
| Email Integrations Count(integrations) | 300+ | — | — |
| Behavioral Automation Triggers(triggers) | Tag-based (limited) | — | — |
| API Rate Limits(requests/second) | 100 | — | — |
| Free Trial Length(days) | 14 days | — | — |
| Starting Price (Monthly)(USD) | $25 | — | — |
| Included Subscribers at Free Tier(contacts) | None (paid only) | — | — |
| Price at 10,000 Subscribers(USD/month) | $79 | — | — |
| Email Deliverability Rate(%) | 99.5% | — | — |
| Third-Party Integrations(integrations) | 100+ | — | — |
| Customer Support Channels(count) | Email only | — | — |
| API Rate Limit(requests per second) | 100 | — | — |
| Form Builder Types(types) | 5 | — | — |
| Average User Satisfaction (G2)(rating) | 4.7/5 | — | — |
| Creator Revenue Retention(percentage) | 90%+ | 90%+ | — |
| Content Monetization Speed(days to first sale) | Immediate (day 1) | Immediate (day 1) | — |
| Content Format Flexibility(format count) | Newsletters, Notes, Video, Audio (4+) | Newsletters, Notes, Video, Audio (4+) | — |
| Estimated Monthly Readers(millions) | 10-15M (growing) | 10-15M (growing) | — |
| Starting Cost(USD) | $0 | $0 | — |
| Revenue Share on Subscriptions(percent) | 10% | 10% | — |
| Setup Time to First Newsletter(minutes) | 5-10 | 5-10 | — |
| Monthly Platform Cost(USD) | $0 (10% revenue share) | $0 (10% revenue share) | — |
| Revenue Retention Rate(%) | 90% | 90% | — |
| Average Subscriber Payment(USD/month) | $5-$10 | $5-$10 | — |
| Platform Commission on Paid Subscriptions(%) | 10% (all payment methods) | 10% (all payment methods) | — |
| Creator Retains of Revenue(%) | 90% | 90% | — |
| Platform Fee on $1,000 Monthly Revenue(USD) | $100 (10% of paid subscriptions) | $100 (10% of paid subscriptions) | — |
| Email Inbox Placement Rate(percent) | 98%+ | 98%+ | — |
| Maximum Custom Membership Tiers(count) | 3 tiers maximum | 3 tiers maximum | — |
| Minimum Membership Price(USD per month) | $5/month | $5/month | — |
| Estimated Active Creator Base(thousands of creators) | ~500,000+ writers | ~500,000+ writers | — |
| Monthly Active Users (Audience)(millions) | ~50+ million monthly | ~50+ million monthly | — |
| Monthly Active Users (Platform)(millions) | 1+ million (estimated 2024) | 1+ million (estimated 2024) | — |
| Monetization Options Available(count) | 2 (subscriptions, paid posts) | 2 (subscriptions, paid posts) | — |
| Organic Discovery Potential(score) | Moderate (Notes feature, recommendations) | Moderate (Notes feature, recommendations) | — |
| Median Creator Monthly Revenue(USD) | $300-$1,500 | $300-$1,500 | — |
All figures sourced from publicly available data. Last updated Jun 2026.
Key Differences
ConvertKit
Fixed monthly subscription ($33-$89/month based on subscribers)
Substack
10% revenue-share on paid subscriptions, no monthly fee🏆
ConvertKit
Email marketing, automation, course creators, and growing businesses
Substack
Independent writers, journalists, and simple paid newsletters
ConvertKit
Advanced email sequences, conditional logic, tags, and workflows🏆
Substack
Basic automation and tagging capabilities
ConvertKit
Steeper - requires understanding of marketing automation
Substack
Minimal - designed for writers, not marketers🏆
ConvertKit
150+ integrations including Zapier, Shopify, WordPress🏆
Substack
Limited integrations, primarily Stripe and basic tools
ConvertKit
Free plan for up to 1,000 subscribers with basic features
Substack
Free plan for unlimited free subscribers, no revenue limit🏆
ConvertKit
Courses, products, digital downloads, affiliate marketing🏆
Substack
Paid subscriptions and upcoming Substack Notes features
ConvertKit
None - creators keep 100% after payment processing🏆
Substack
10% platform fee on all paid subscriber revenue
Full Comparison
| Attribute | ConvertKit | Substack |
|---|---|---|
| Base Monthly Price(USD) | $25 (paid plan) | — |
| Cost at 10,000 Subscribers(USD/month) | $119 (10k subscriber tier) | — |
| Starting Monthly Cost(USD) | $33/month (Creator plan, billed yearly) | $0 (revenue-share only) |
| Platform Fee on Revenue(%) | 0% | 10% |
| Starting Cost(USD/year) | $300 minimum | — |
Show 9 more attributesBase Price (Monthly)(USD) $25 — Free Trial Duration(days) 14 days — Starting Price(USD/month) $25/month — Starting Price (Monthly)(USD) $25 — Included Subscribers at Free Tier(contacts) None (paid only) — Price at 10,000 Subscribers(USD/month) $79 — Starting Cost(USD) $0 — Revenue Share on Subscriptions(percent) 10% — Monthly Platform Cost(USD) $0 (10% revenue share) — | ||
| Contacts/Subscribers (Base Plan)(count) | 1,000 | — |
| Native Integrations(count) | 50+ | — |
| Third-party Integrations(integrations) | 150+ | 15-20 |
| Landing Page Builder | Yes, built-in | — |
| CRM & Deal Pipeline | Basic subscriber management | — |
| Automation Workflow Complexity(trigger types) | Standard (simple sequences, tags) | — |
| Free Subscriber Limit(subscribers) | 1,000 subscribers | Unlimited |
| Email Automation Workflows(capability level) | Advanced (sequences, conditionals, tags, delays) | Basic (simple sequences) |
Show 21 more attributesNative Product/Course Hosting(capability) Yes - full course and digital product platform No - subscriptions only Automation Workflows (Basic Tier)(count) Unlimited — Landing Page Templates(count) 12 — Subscriber Segmentation Levels(depth) Tags, purchase history, custom fields — Email Integrations Count(integrations) 300+ — Automation Workflows Included(templates) Creator sequences — SMS Marketing Availability(tier) Paid add-on ($9+/mo) — Built-in Paywall/Paid Subscriptions(availability) Yes, native feature — A/B Testing on Landing Pages(availability) Limited — Affiliate Program for Creators(availability) Yes, built-in matching — Form Builder Types(types) 5 — Content Format Flexibility(format count) Newsletters, Notes, Video, Audio (4+) — Design Customization Level Limited customization options — Built-in Discovery Features Established Notes network with high discoverability — Analytics Depth Basic subscription and open rate analytics — API and Integration Support Limited third-party integration options — SEO Capabilities Basic (limited control) — Monetization Methods Primarily paid subscriptions — Maximum Custom Membership Tiers(count) 3 tiers maximum — Native Shop/Products Feature(yes/no) No—requires third-party integration — Monetization Options Available(count) 2 (subscriptions, paid posts) — | ||
| Setup Time to Productivity(weeks) | 1-3 days | — |
| Setup Time for Beginners(hours) | 4-6 hours | 30 minutes - 1 hour |
| Customer Support | Email, help center, community forum | Email, help center, limited support |
| Monthly Active Users (Platform Reach)(millions) | 0 (creator-owned only) | — |
| Audience Ownership(percentage) | 100% (creator owned) | — |
| Email Marketing Capability(feature availability) | Full-featured email marketing with automation | — |
| Setup Time to First Publish(minutes) | 60-120 minutes | — |
| Setup Time to First Newsletter(minutes) | 5-10 | — |
| Setup Complexity(hours) | 0.5-1 hour (minimal onboarding) | — |
| Subscriber List Export(availability) | Full export available | — |
| Maximum Revenue Potential (Monthly)(USD) | Unlimited (creator-controlled) | — |
| Creator Revenue Retention(percentage) | 90%+ | — |
| Content Monetization Speed(days to first sale) | Immediate (day 1) | — |
| Revenue Retention Rate(%) | 90% | — |
| Average Subscriber Payment(USD/month) | $5-$10 | — |
Show 1 more attributeMinimum Membership Price(USD per month) $5/month — | ||
| Cost per 10,000 Subscribers/Year(USD) | $360 | — |
| SMS Marketing Included | No (third-party required) | — |
| Shopify Integration Quality(level) | Basic API integration only | — |
| Customer Support Response Time(hours) | 12-18 hours average | — |
| Customer Support Channels(count) | Email only | — |
| Behavioral Automation Triggers(triggers) | Tag-based (limited) | — |
| API Rate Limits(requests/second) | 100 | — |
| API Rate Limit(requests per second) | 100 | — |
| SMS Deliverability Rate(percent) | N/A | — |
| Email Deliverability Rate(%) | 99.5% | — |
| Free Trial Length(days) | 14 days | — |
| Third-Party Integrations(integrations) | 100+ | — |
| Average User Satisfaction (G2)(rating) | 4.7/5 | — |
| Audience Discovery for New Writers(ease rating) | Low (requires existing audience) | — |
| Audience Discovery Strength | Strong directory and algorithm-driven recommendations | — |
| Subscriber List Ownership(yes/no) | Yes | — |
| Estimated Monthly Readers(millions) | 10-15M (growing) | — |
| Monthly Active Users (Audience)(millions) | ~50+ million monthly | — |
| Algorithm Dependency Risk(risk level) | Low (own subscribers) | — |
| Platform Content Diversity Trend (2026)(growth/decline) | Expanding (Notes, Video, Visual) | — |
| Design Customization(Collections/Year) | Limited templates and styling | — |
| Platform Commission on Paid Subscriptions(%) | 10% (all payment methods) | — |
| Creator Retains of Revenue(%) | 90% | — |
| Platform Fee on $1,000 Monthly Revenue(USD) | $100 (10% of paid subscriptions) | — |
| Payment Processing Fees(percentage + fixed) | Included in platform fee | — |
| Email Inbox Placement Rate(percent) | 98%+ | — |
| Estimated Active Creator Base(thousands of creators) | ~500,000+ writers | — |
| Monthly Active Users (Platform)(millions) | 1+ million (estimated 2024) | — |
| Organic Discovery Potential(score) | Moderate (Notes feature, recommendations) | — |
| Subscriber Data Ownership | Creator owns full email list and subscriber data | — |
| Median Creator Monthly Revenue(USD) | $300-$1,500 | — |
Show 9 more attributes
Show 21 more attributes
Show 1 more attribute
Visual Comparison
Side-by-side comparison of numeric attributes
Pros & Cons
ConvertKit
Pros
- Advanced email automation with conditional logic and segmentation
- Native course and digital product hosting capabilities
- 150+ third-party integrations via Zapier and direct connections
- Creator-focused design with better education and resources
- No platform fee - creators keep 100% of subscription revenue
Cons
- Higher upfront costs starting at $33/month even for small lists
- Steeper learning curve for non-marketing-focused creators
Substack
Pros
- Zero upfront costs with 10% revenue-share model
- Minimal learning curve - built specifically for writers
- Unlimited free subscribers on free tier
- Clean, distraction-free writing interface
- Growing creator community with built-in discoverability features
Cons
- 10% platform fee reduces earnings from paid subscriptions
- Limited automation and marketing features compared to competitors
- Minimal integrations with external tools and platforms
Frequently Asked Questions
It depends on subscriber tier and revenue. ConvertKit's Creator plan at $59/month (up to 3,000 subscribers) or $89/month (up to 10,000) would cost $59-89/month. With Substack, at $5-10/month per subscriber average, 5,000 paid subscribers could generate $25,000-50,000/month revenue minus 10% fee (~$2,500-5,000/month), making it significantly cheaper. However, if your paid subscriber count is low (under 500), Substack's fixed fees may favor ConvertKit.
Resources & Learn More
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