Postmark vs Substack: Pricing Comparison 2026
Side-by-side pricing comparison of Postmark and Substack. See all plans, features, and costs at a glance.
Bottom line: Postmark starts at $5/mo and Substack starts at $5/mo. Compare all 10 pricing tiers side by side.
Last updated: March 16, 2026
Postmark vs Substack: Quick Pricing Facts
| Feature | Postmark | Substack |
|---|---|---|
| Starting Price | $5/mo | $5/mo |
| Number of Plans | 3 | 7 |
| Free Tier | No | Yes |
| Pricing Model | usage-based | usage-based |
| Annual Discount | N/A | N/A |
Postmark and Substack are both priced at $5/mo, making them equally accessible Email Marketing tools. Together they offer 10 pricing plans with 22 features compared, so the best choice comes down to which features match your needs.
Substack stands out with a free plan for getting started.
Review the detailed tier-by-tier comparison above to see exactly which features are included at each price point and find the best fit for your Email Marketing needs.
| Pricing Plans |  Postmark Try it free |  Substack Try it free |
|---|---|---|
| Tier 1 | Dedicated IPs $50/month | Free $0/monthCheapest Includes
|
| Tier 2 | Custom activity retention $5/monthCheapest | Basic $5/monthCheapest $5 / year Includes
|
| Tier 3 | DMARC monitoring $14/month | Standard $7/monthCheapest $7 / year Includes
|
| Tier 4 | — | Advanced $10/monthCheapest $10 / year Includes
|
| Tier 5 | — | Pro $15/monthCheapest $15 / year Includes
|
| Tier 6 | — | Premium $30/monthCheapest $30 / year Includes
|
| Tier 7 | — | Enterprise $75/monthCheapest $75 / year Includes
|
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Substack
Substack offers a free plan, offers 7 tiers vs 3.
Based on pricing data only. Review the full comparison below for your specific needs.
Best value: Substack
Try Substack freeWhich Should You Choose?
Choose Postmark if:
- •You prioritize Postmark's user experience and interface over price (both tools are similarly priced)
- •Postmark's usage-based pricing lets you match exact team size without tier gaps
- •Postmark keeps its feature set lean, which means faster onboarding and less complexity
Choose Substack if:
- •You need a free plan with Set up paid subscriptions, Keep 90% of revenue—Substack offers no-cost access with no credit card required
- •You need 7 pricing tiers for flexible team sizing—more options mean less overpaying for features you don't need
- •You want more features built-in—Substack offers 22 additional features across its plans
Substack offers a free plan [1], eliminating the cost barrier for evaluation, while Postmark requires paid subscription from the start. This gives Substack a significant advantage for teams with budget constraints or extended trial periods. Once you outgrow Substack's free tier, upgrading to a paid plan at approximately $5/mo provides substantial additional functionality. Compare this pricing path against Postmark's tiering starting at $5/mo to assess total cost of ownership over 12 months. Substack's 7 tiers provide flexibility at different budgets, while Postmark's 3 tiers structure may force you into higher-cost plans than necessary for your use case. If evaluation cost matters to your decision, Substack is the obvious starting point with zero financial commitment. Use the free tier to validate core functionality before committing to paid plans from either tool.
Frequently Asked Questions: Postmark vs Substack
Which is cheaper, Postmark or Substack?
How many pricing plans does Postmark have vs Substack?
Does Postmark or Substack offer a free plan?
Can I save money by paying annually for Postmark or Substack?
How do Postmark and Substack compare for Email Marketing?
Sources
- Postmark Official Pricing— Vendor pricing page
- Substack Official Pricing— Vendor pricing page
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