Hosted paid publication
Lumail vs Substack
Choose Substack for the simplest hosted paid publication. Choose Lumail when you need owned infrastructure, advanced workflows, product email, and predictable SaaS pricing instead of a revenue share.
Pricing checked August 9, 2026
| Decision | Lumail | Substack |
|---|---|---|
| Free allowance | $0, 5,000 emails/month | Free publishing for any subscriber count |
| Paid entry | $20/month, 20,000 included, then $0.60/1,000 | 10% of paid-subscription revenue, plus Stripe fees |
| Pricing basis | Unlimited subscribers; pricing follows email volume | Revenue share when paid subscriptions are enabled |
| Automation | Graph workflows with triggers, branches, goals, exits, and A/B paths | Publication and subscriber features rather than graph workflows |
| AI and developer access | ChatGPT OAuth, MCP, skills, CLI, SDK, REST API, and visual editor | No equivalent organization-wide MCP, CLI, SDK, and REST surface |
| Transactional email | Included through API, SMTP, SDK, CLI, and agent tools | Not a transactional email API |
| Publishing surface | Capture pages and custom web domains; not a general website builder | Hosted publication, app, community, and paid subscriptions |
Where Substack is strong
A real alternative, not a straw man.
Substack provides free hosted publishing, email delivery, reader discovery, community features, and a built-in paid-subscription model. Its strongest fit is writers who want the shortest path to a hosted paid publication.
- No monthly platform fee for free publications
- Built-in paid subscriptions and reader network
- Very low setup and publishing friction
The workflow is the real product test.
Feature tables flatten important differences. Rebuild one journey with a real trigger, a branch, a wait, a conversion goal, and an exit rule. Then inspect what happened to one subscriber. That test exposes more than a checklist ever will.
- 1. Import a small, consented subscriber sample.
- 2. Recreate one campaign and its audience rule.
- 3. Publish one automation with a measurable goal.
- 4. Trigger a test run and inspect every event.
- 5. Compare the repeated work, not only setup time.
Choose Lumail if…
- You want to avoid a 10% platform share on paid revenue
- You need advanced segmentation and graph-based automations
- You need transactional email, APIs, or agent operations
Choose Substack if…
- You want a hosted publication with minimal setup
- Substack's reader network is part of your growth strategy
- You prefer revenue share over a recurring software subscription
Test the operating model
Store unlimited subscribers. Start with 5,000 emails free.
Recreate one real campaign, workflow, and transactional message before migrating a full audience. No credit card required.
Questions before you switch
Is Lumail cheaper than Substack?
It depends on list size, sending frequency, and the features you need. Lumail charges by email volume and stores unlimited subscribers. Substack uses revenue share when paid subscriptions are enabled. Model one normal month and one peak month before deciding.
What is the main difference between Lumail and Substack?
Choose Substack for the simplest hosted paid publication. Choose Lumail when you need owned infrastructure, advanced workflows, product email, and predictable SaaS pricing instead of a revenue share.
Can I migrate from Substack to Lumail?
Yes. Export a controlled subscriber sample first, reproduce one campaign and one automation, verify sender-domain authentication, then compare delivery and workflow behavior before moving the full audience.